How do you assess wines correctly? Winepro Australia helps you to identify the ten most common mistakes to avoid when wine tasting.
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The Art of Assessing Fine Wine: The 10 Most Common Mistakes, Training Your Palate and Recognising the Difference Between Great Wine and Poor Winemaking.
An essential guide for wine lovers, restaurant professionals, sommeliers, retailers and wine buyers who want to understand what makes a wine genuinely good, how to recognise faults, and how to distinguish quality winemaking from commercially manufactured wine.
Introduction: Learning to Taste Beyond the Label.
Wine is one of the world's most fascinating agricultural products. It is a combination of nature, geography, climate, craftsmanship, science and, perhaps most importantly, personal interpretation. Yet despite the enormous amount of information available about wine, many people who regularly drink, sell, recommend or purchase it have never been properly taught how to assess its quality.
Being able to recognise a grape variety, identify a wine region or remember a famous producer is useful, but it does not necessarily mean someone understands wine quality. Genuine wine appreciation requires something more: an educated palate, a working knowledge of winemaking, an understanding of balance and structure, and the ability to recognise when something is not quite right.
One of the biggest misconceptions in the wine industry is that an expensive wine must be good, a popular wine must be well made, or a powerful wine must be impressive. None of these assumptions is necessarily true.
A wine can have an attractive label, an impressive marketing story, plenty of fruit and a high alcohol content, yet still be technically unbalanced, artificially manipulated or fundamentally lacking in quality.
Equally, a beautifully made small-batch wine from a family-owned Australian producer may be considerably more interesting, balanced and enjoyable than a heavily commercialised wine produced in enormous volumes.
The challenge is learning to distinguish the two.
For every wine lover, retailer, wine buyer, sommelier and restaurant worker, understanding the fundamentals of wine assessment is an essential professional skill. It allows us to make better purchasing decisions, provide more informed recommendations, protect customers from disappointing experiences and, importantly, recognise and support genuine winemaking craftsmanship.
This guide explores ten of the most common mistakes made when assessing wine, how to train your palate, and how to recognise the difference between natural complexity, deliberate winemaking decisions and genuine wine faults.

The 10 Most Common Mistakes When Assessing Fine Wine
1. Mistaking Power, Concentration and Alcohol for Quality
One of the most common mistakes in wine assessment is assuming that bigger automatically means better.
A wine with enormous fruit concentration, substantial oak, high alcohol and an intense initial flavour can certainly make an impression. However, intensity alone is not an indication of quality.
Some commercial red wines are deliberately produced to deliver an immediate explosion of ripe fruit, sweetness, alcohol and oak flavour. They can be attractive on the first sip, particularly to inexperienced drinkers, but often lack balance, refinement and length.
A genuinely fine wine does not need to overwhelm the palate.
Look instead for harmony between fruit, acidity, tannin, alcohol and texture. The components should work together rather than compete for attention.
High alcohol can create warmth, weight and richness, but when excessive or poorly integrated it produces a burning sensation in the throat, a hot finish and a heavy, tiring mouthfeel.
What to look for: A wine that feels complete, with alcohol supporting the fruit and structure rather than dominating them. Quality wines should encourage another sip, not leave the palate exhausted.
2. Confusing Sweetness with Fruit Quality
Sweetness is one of the easiest characteristics for an inexperienced palate to recognise. It is also one of the easiest ways for a wine to appear more attractive than it really is.
Some wines contain residual sugar, while others create an impression of sweetness through very ripe fruit, high alcohol, oak-derived vanilla and glycerol.
There is nothing inherently wrong with sweetness. Many outstanding wines are deliberately made with residual sugar. The issue is whether that sweetness is appropriate to the style and balanced by acidity, fruit and structure.
A heavily commercialised wine may use residual sugar to disguise harsh acidity, aggressive tannins, green flavours or deficiencies in fruit quality.
This can create a soft, initially appealing wine that becomes cloying, simplistic and tiring after a glass.
Fine wine is not necessarily dry, but its sweetness should have a purpose.
What to look for: Distinguish perceived fruit sweetness from actual residual sugar. Ask whether the wine has freshness, complexity and enough acidity to prevent sweetness from becoming dominant.

3. Judging Wine by Its Colour, Appearance or Label
Colour can tell us a great deal about wine, but it cannot tell us everything.
A deep purple Shiraz may appear powerful and youthful, while a lighter-coloured Pinot Noir may be extraordinarily complex and beautifully structured.
Likewise, a pale Chardonnay can be a wonderful expression of cool-climate fruit, while a deeper golden colour may indicate age, oak influence, skin contact or oxidation.
Neither colour nor intensity is a reliable measure of quality in isolation.
(Remember there are products available on the market such as grapex that can add bright colours to dull wines)
The same applies to labels, packaging, medals and price. Attractive branding, prestigious appellations and impressive awards can influence expectations before the wine has even reached the glass.
This is known as expectation bias.
What to look for: Assess the wine independently of its label, reputation and price. Whenever possible, taste blind. You may be surprised by how frequently your judgement changes when you do not know what you are drinking.
4. Mistaking Oak for Complexity
Oak is an important winemaking tool, but it is not a substitute for quality grapes.
Barrels can contribute vanilla, cedar, toast, spice, smoke, chocolate and subtle savoury characteristics. They can also influence texture and the development of a wine through controlled oxygen exposure.
However, excessive oak can overwhelm the fruit, creating a wine that tastes more like a piece of timber than a vineyard.
New American oak, in particular, can contribute pronounced vanilla, coconut and sweet spice characteristics. French oak often offers more restrained spice, toast and cedar notes, although the result depends heavily on the barrel, cooperage, toast level and wine.
A common mistake is assuming that the more oak a wine displays, the more sophisticated it must be.
What to look for: Oak should complement the wine rather than dominate it. The fruit should remain identifiable, the texture should be integrated and the finish should not be dominated by bitterness, char or excessive wood-derived flavours.

5. Confusing Acidity with Freshness and Accepting Excessive Acid
Acidity is essential to wine. It gives freshness, structure, definition and longevity. It also makes wine more versatile with food.
However, acidity must be assessed in context.
A wine with beautifully integrated acidity feels lively, mouth-watering and refreshing. Excessive or poorly balanced acidity can produce a sharp, sour, aggressive sensation that dominates the fruit and makes the wine difficult to enjoy.
There are several organic acids naturally present in grapes and wine, principally tartaric, malic, lactic, citric and succinic acids.
Winemakers may also make legitimate, regulated adjustments to acidity where climatic conditions or grape maturity warrant intervention. Acidification is not automatically evidence of poor winemaking.
The concern arises when excessive or inappropriate acid additions are used to compensate for fruit that lacks natural freshness or has been harvested at unsuitable maturity.
Likewise, deacidification may sometimes be necessary in high-acid wines, particularly in cooler climates.
What to look for: Good acidity should create freshness and length without stripping the palate of fruit. Look for a natural relationship between acidity, flavour intensity, alcohol and texture.
6. Failing to Recognise Sulphur, Reduction and Mercaptan Characters
Sulphur-related wine aromas are among the most misunderstood aspects of wine assessment.
Sulphur dioxide (SO₂) is routinely used in winemaking as an antioxidant and antimicrobial preservative. When properly managed, it protects wine from oxidation and unwanted microbial activity.
It is important to understand that SO₂ is not the same thing as hydrogen sulphide or mercaptans, even though all belong to the broader chemistry of sulphur-containing compounds.
Different sulphur compounds produce different sensory characteristics.
Sulphur dioxide (SO₂): Excessive free SO₂ can produce pungent, sharp, matchstick-like or irritating aromas. Some tasters describe the sensation as burnt matches or struck flint. However, struck-flint character can also arise from other compounds and winemaking processes, so it should not automatically be attributed to SO₂.
Hydrogen sulphide (H₂S): Commonly associated with rotten eggs, sewage or unpleasant stagnant aromas. It is generally considered a reduction fault when excessive.
How many times have I heard someone smell this and describe the wine as 'funky', thinking it's a good thing...
Mercaptans (thiols): Certain volatile sulphur compounds can produce aromas resembling onion, garlic, cabbage, rubber, drains or cooked vegetables. Some sulphur-containing thiols, however, are desirable in particular wines, contributing passionfruit, grapefruit and other distinctive varietal aromas.
Reduction: This is a broad term used to describe wine characters associated with limited oxygen exposure and certain sulphur compounds. Mild reduction may present as struck match, flint or smoky mineral-like notes. More severe reduction can become unpleasant and mask fruit.
An important distinction is that not every reductive aroma is a fault. Some wines display a subtle reductive character that contributes complexity, while others are clearly affected by excessive hydrogen sulphide or mercaptans.
What to look for: A wine should have identifiable fruit and freshness. If sulphurous aromas dominate, obscure the fruit or remain unpleasantly persistent, the wine may have a reduction problem. Some reduction characters can dissipate with aeration, although more serious mercaptan-related faults may persist.

7. Failing to Recognise Volatile Acidity (VA)
Volatile acidity is another characteristic that separates a well-made wine from one that has suffered from poor microbial management or other winemaking problems.
The principal contributor to volatile acidity in wine is acetic acid, the same acid associated with vinegar. Ethyl acetate, a related compound, can contribute additional pungent, solvent-like aromas.
At low levels, volatile acidity may contribute complexity and lift to certain wine styles. Some traditional winemakers and wine enthusiasts even appreciate a very subtle degree of VA in particular wines.
However, when excessive, it becomes an obvious fault.
Common characteristics include:
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Vinegar or pickling liquid.
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Nail polish remover or nail varnish.
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Acetone-like solvent aromas.
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Sharp, unpleasant acidity.
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A persistent, pungent sensation that masks the fruit.
VA can develop through unwanted microbial activity, including the activity of acetic acid bacteria, particularly when wine is exposed to oxygen under unsuitable conditions. Certain yeast and bacterial organisms can also contribute to volatile acidity.
It is particularly important to understand that volatile acidity is not the same as the natural acidity that gives wine freshness and structure.
A wine can have high total acidity and very little VA, or relatively low total acidity and excessive VA.
What to look for: Freshness should remind you of fruit, citrus, crisp apples, berries and other natural flavours. It should not resemble vinegar or nail polish remover. A wine with excessive VA will often have a sharp, aggressive nose and a finish that lacks elegance.
8. Accepting Oxidation and Heat Damage as Normal Wine Characteristics
Oxygen is both a friend and an enemy of wine.
Controlled exposure to oxygen is an important part of winemaking and maturation. It can help soften tannins, develop complexity and encourage the evolution of secondary and tertiary aromas.
However, uncontrolled oxidation can destroy freshness, diminish fruit and make wine appear tired or lifeless.
Oxidised wines may display:
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Bruised apple and brown pear.
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Nutty or sherry-like aromas in wines not intended to display them.
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Dull, brownish or prematurely developed colour.
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Loss of fresh fruit characteristics.
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A flat, tired or stale finish.
Some oxidative wine styles, such as traditional Sherry, Madeira and certain deliberately oxidative white wines, are entirely intentional. The difference is whether the character is appropriate to the style and whether the wine retains balance.
Heat damage is another serious problem, particularly in Australia's climate.
Wine is a living product that responds to temperature changes. Prolonged exposure to excessive heat can accelerate chemical reactions, damage delicate aromas and compromise the wine's structure.
A heat-damaged wine may display:
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Stewed or cooked fruit.
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Jammy, raisined or baked characteristics.
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Dull and diminished freshness.
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Excessive sweetness of impression.
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A tired, flat palate.
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Signs of leakage, pushed corks or compromised closures.
Temperature fluctuations can also contribute to closure failure and oxygen ingress.
A wine that has spent too much time in a hot warehouse, delivery vehicle, shipping container or poorly managed cellar may be compromised before it reaches the customer.
What to look for: Freshness is a particularly important indicator. Fruit should appear vibrant and identifiable, rather than cooked, stale or prematurely aged. Pay attention to storage conditions and provenance, especially when purchasing fine wine for cellaring.

9. Failing to Recognise Unbalanced or Manipulated Wines
Modern winemaking is a combination of agricultural knowledge, traditional craftsmanship and sophisticated technology.
There is nothing inherently wrong with technology. Temperature-controlled fermentation, filtration, laboratory analysis and carefully managed additions can all contribute to better and more consistent wine.
However, technical intervention should support the quality of the fruit, not disguise its shortcomings.
A poor-quality grape crop cannot simply be transformed into a great wine by adding chemicals, correcting numbers and manipulating the finished product.
Some common interventions and their purposes include:
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Acidification: Adding permitted acids to increase freshness and adjust acidity.
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Deacidification: Reducing excessive acidity.
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Tannin additions: Adjusting structure, mouthfeel and stability.
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Enzyme additions: Assisting extraction, clarification or processing.
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Concentrated grape products: Increasing sugar or adjusting concentration where permitted.
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Oak alternatives: Adding oak-derived flavours through chips, staves or other products.
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Sweetening: Using permitted grape-based products or residual sugar to adjust sweetness.
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Colour adjustment: Using permitted winemaking techniques and products to influence colour and stability.
These practices are not automatically evidence of inferior wine. Some are legitimate tools used by excellent winemakers, and their use is regulated differently according to jurisdiction and wine category.
The important question is whether the final wine remains balanced, expressive and authentic.
A wine that tastes artificially sweet, excessively acidic, unusually heavy, aggressively coloured or dominated by oak flavour may be giving the drinker an impression of quality that the underlying fruit does not support.
There is also a difference between a technically correct wine and a genuinely beautiful wine.
A wine can meet every laboratory specification and still be dull, uninteresting and forgettable.
What to look for: Look for natural expression, definition, texture and integration. Do not assume that every intervention is bad, but do not confuse technical perfection with genuine quality.
10. Ignoring Length, Texture, Balance and the Finish
Perhaps the greatest mistake of all is judging a wine by its first impression.
The first taste can be deceptive. A wine may deliver an immediate burst of ripe fruit, sweetness, oak and alcohol, but what happens after swallowing is often much more revealing.
Professional wine assessment places considerable importance on the finish, also known as persistence or length.
A high-quality wine should leave an impression that continues after the wine has been swallowed or spat out.
This does not mean that the finish must be powerful. It may be delicate, elegant, savoury, mineral, floral or fruit-driven.
What matters is that the flavours remain harmonious and develop rather than simply disappear.
Consider the following comparison:
|
Commercially driven wine |
Carefully crafted fine wine |
|---|---|
|
Immediate fruit sweetness |
Defined natural fruit expression |
|
Heavy or hot alcohol |
Integrated alcohol |
|
Dominant oak flavour |
Subtle, integrated oak |
|
Sharp or artificial acidity |
Fresh, balanced acidity |
|
Short, simple finish |
Long, evolving finish |
|
Jammy, cooked fruit |
Bright, vibrant fruit |
|
One-dimensional flavour |
Layers of complexity |
|
Designed for immediate impact |
Designed for enjoyment and development |
The best wines do not necessarily shout. They often reveal themselves gradually.
What to look for: Pay attention to the texture, mid-palate, development and finish. Ask yourself whether the wine becomes more interesting as you drink it, or whether the initial impression quickly disappears.
Quite often, commercial wines that are designed to 'pop' instantly, fall over after 15 minutes, whereas small batch (and better quality wines in general) start to lift even more in the first 15 minutes...
Training Your Palate: How to Become a Better Wine Assessor
Developing a good palate is not about being born with an extraordinary sense of smell or taste. It is about education, repetition, curiosity and learning to recognise sensory characteristics.
Professional sommeliers and experienced wine buyers develop their abilities through years of structured tasting. However, anyone can improve considerably by following a disciplined approach.
1. Learn to Smell Before You Taste
The human sense of smell is one of the most important tools in wine assessment.
Much of what we describe as flavour is actually aroma detected through the nose, including retronasal perception when wine is in the mouth.
Before tasting, spend time smelling the wine.
Look for different aroma categories:
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Primary aromas: Fruit, flowers, herbs and other characteristics associated with the grape variety and vineyard.
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Secondary aromas: Characteristics developed through winemaking, including yeast, fermentation, malolactic fermentation and lees contact.
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Tertiary aromas: Characteristics that develop through bottle or barrel maturation, including leather, tobacco, dried fruit, nuts, forest floor and savoury complexity.
Try to identify individual aromas rather than simply saying the wine smells fruity.
For example, instead of describing a Shiraz as having berry aromas, consider whether you can identify blackberry, blueberry, mulberry, black cherry, plum or raspberry.
The more precise your vocabulary becomes, the more confident your assessment will be.
2. Build your own Aroma Library
One of the best ways to train your palate is to smell real ingredients.
Visit a fruit shop and smell different fruits. Buy fresh herbs and spices. Smell flowers, vegetables, coffee, chocolate and other everyday products.
Develop familiarity with:
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Citrus fruits, apples, pears and stone fruits.
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Strawberries, raspberries, cherries and blackberries.
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Tropical fruits such as pineapple, passionfruit and mango.
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Herbs such as rosemary, thyme, mint and basil.
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Spices including pepper, cinnamon, cloves and nutmeg.
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Oak-related aromas such as vanilla, cedar, toast and smoke.
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Savoury aromas such as mushrooms, leather, earth and tobacco.
This exercise helps you establish a sensory reference library that you can draw upon when tasting wine.
Look for our Winepro Australia blogs outlining how to assess fine wines and our list of flavour descriptors.
3. Taste Wines Side by Side
Comparative tasting is one of the most effective ways to improve your understanding.
Rather than tasting one wine in isolation, select two or three wines made from the same grape variety but from different regions, producers or winemaking approaches.
For example:
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Adelaide Hills Chardonnay against Margaret River Chardonnay.
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Eden Valley Riesling against Clare Valley Riesling.
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Barossa Shiraz against McLaren Vale Shiraz.
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Cool-climate Pinot Noir against warmer-climate Pinot Noir.
Observe differences in acidity, alcohol, tannin, fruit intensity, texture and finish.
You will gradually begin to understand how climate, soil, grape maturity, vineyard management and winemaking influence the finished product.

4. Learn to Recognise the Five Essential Structural Components
Every wine should be assessed for its fundamental structural characteristics.
Acidity: Does it create freshness and lift, or does it taste sharp and aggressive?
Tannin: In red wine, does the tannin feel fine, silky and integrated, or coarse, drying and astringent?
Alcohol: Is it balanced and warming, or does it produce an unpleasant burning sensation?
Fruit concentration: Is the fruit clearly identifiable, vibrant and persistent, or does it taste cooked, artificial or hollow?
Body and texture: Does the wine feel elegant, rounded, creamy, lean, structured or heavy? Does the texture suit the style?
These components should be considered together. A wine does not need maximum acidity, tannin or concentration to be excellent. It needs the right relationship between them.
5. Learn to Assess the Finish
After swallowing or spitting out the wine, wait a few moments.
Ask yourself:
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Does the fruit remain?
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Does the wine become more complex?
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Is there a pleasant savoury or mineral quality?
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Does the acidity encourage another sip?
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Is there a lingering bitterness?
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Does alcohol become more obvious?
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Does the flavour disappear immediately?
A short finish is dissapointing, yet not automatically a fault, particularly in lighter wine styles. However, persistence and harmonious development are important indicators when assessing fine wine.
6. Taste Blind and Challenge Your Own Expectations
Blind tasting removes the influence of price, reputation, packaging and producer recognition.
It is an excellent way to discover personal biases.
Try tasting a modestly priced family-owned wine against an expensive commercial brand without knowing which is which.
You may find that the wine you assumed was more expensive is not necessarily the better wine.
The objective is not to prove that expensive wines are inferior or that inexpensive wines are superior. It is to train yourself to judge what is actually in the glass.

Understanding the Difference Between Commercial Wine and Genuine Small-Batch Winemaking
There is an important distinction between producing wine for volume, consistency and immediate commercial appeal, and producing wine with an emphasis on vineyard expression, individuality, balance and craftsmanship.
Neither production volume nor ownership structure automatically determines quality. Large wineries can produce excellent wines, just as small wineries can produce disappointing ones. However, the commercial pressures associated with high-volume production can sometimes encourage a particular style of wine: one designed to deliver an immediate, predictable sensory experience to a broad market.
This is where wine buyers and consumers need to become more discerning.
The hard, short, hot and sugary commercial style
Some commercially driven wines are designed around immediate impact.
They may display:
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Extremely ripe, jammy or cooked fruit characteristics.
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High alcohol that creates weight and warmth.
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Noticeable residual sweetness.
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Heavy-handed oak flavours.
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Excessive extraction and coarse tannins.
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Acid adjustments that are poorly integrated.
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A relatively short and simple finish.
These wines can be commercially successful because they are immediately recognisable and consistent. They may also suit particular consumer preferences.
However, a wine that relies on sweetness, alcohol, oak and concentration to create an impression of richness can lack the finer qualities associated with genuinely outstanding winemaking.
It is worth remembering that commercial consistency is not necessarily the same thing as complexity or individuality.
The soft, bright, balanced and lengthy small-batch style
At the other end of the spectrum are wines made with an emphasis on expressing the character of the vineyard, grape variety, region and vintage.
A carefully crafted small-batch wine may offer:
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Bright, clearly defined fruit.
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Natural freshness and integrated acidity.
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Fine, supportive tannins.
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Alcohol that complements rather than dominates.
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Subtle, integrated oak.
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Texture and mouthfeel that develop across the palate.
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Layers of fruit, spice, savoury and mineral characteristics.
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A long, clean and evolving finish.
These wines are often less concerned with making an immediate impression and more interested in revealing their personality over time.
They may be delicate rather than powerful, elegant rather than imposing, and complex rather than immediately obvious.
This is particularly important when assessing Australian wines. Our country produces an extraordinary diversity of wine styles, from the elegant Rieslings of Eden Valley and Clare Valley to the sophisticated Chardonnays of the Adelaide Hills and Margaret River, and the beautifully structured Shiraz and Grenache wines of Barossa and McLaren Vale.
The finest examples are not necessarily the biggest or most expensive. They are the wines in which the individual components come together harmoniously.
A Practical Guide to Identifying Common Wine Faults
The following reference is useful for anyone involved in wine purchasing, retailing, hospitality or professional tasting.
|
Characteristic |
What you may smell or taste |
What to consider |
|---|---|---|
|
Excessive SO₂ |
Pungent, sharp, irritating sulphur aroma |
Excessive free sulphur dioxide |
|
Hydrogen sulphide |
Rotten eggs, stagnant drains |
Reductive fault |
|
Mercaptans |
Onion, cabbage, garlic, rubber |
Sulphur compound development |
|
Excessive reduction |
Dirty drains, struck match, rubber |
Volatile sulphur compounds |
|
Volatile acidity |
Vinegar, nail polish remover |
Excessive acetic acid and related compounds |
|
Oxidation |
Bruised apples, stale nuts, sherry-like notes |
Unwanted oxygen exposure |
|
Heat damage |
Stewed fruit, baked berries, jam |
Poor transport or storage |
|
Excessive acidity |
Sharp, sour, aggressive palate |
Poor structural balance |
|
Excessive alcohol |
Hot throat, burning finish |
Poor integration of alcohol |
|
Excessive oak |
Timber, vanilla, toast dominating fruit |
Oak imbalance |
One important distinction: these are sensory indicators, not definitive laboratory diagnoses. Different compounds can produce overlapping aromas, and some characteristics are desirable in particular wine styles.
The Australian Wine Research Institute (AWRI) provides an excellent technical reference for understanding these faults and their chemical origins.
A Professional Wine-Tasting Exercise for Retailers and Restaurant Staff
Every wine buyer, sommelier, restaurant manager and retail employee should regularly practise a structured tasting routine.
The following exercise can be completed in approximately 30–45 minutes and is particularly useful for staff training.
The six-stage professional tasting method
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Appearance
Assess colour, clarity, brightness, intensity and visual development. Consider whether the appearance is appropriate for the variety and age.
-
First aroma
Smell the wine before swirling. Identify the first impressions and look for any obvious faults.
-
Developed aroma
Swirl gently and smell again. Look for fruit, flowers, herbs, spices, oak, fermentation characters and maturation aromas.
-
Palate structure
Taste the wine and assess acidity, sweetness, tannin, alcohol, body, texture and fruit concentration.
-
Balance and complexity
Determine whether the components work together. Look for harmony, development and integration rather than individual characteristics competing for attention.
-
Finish and overall quality
Assess flavour persistence, freshness, complexity and drinkability. Decide whether the wine deserves another glass and whether it offers genuine quality and value.
A useful staff-training exercise: Compare three wines
Select three wines of the same grape variety:
-
A mainstream commercial wine.
-
A moderately priced regional wine.
-
A small-batch wine from an independent family-owned producer.
Taste them blind and record your observations.
Ask each participant to identify which wine has:
-
The best fruit definition.
-
The most balanced acidity.
-
The best-integrated alcohol.
-
The finest tannin structure.
-
The greatest complexity.
-
The longest finish.
-
The best overall balance.
-
The greatest appeal when enjoyed with food.
Discuss the results as a group.
The purpose is not to establish that one price category or production method always wins. It is to teach people to recognise genuine quality rather than simply follow familiar brands, marketing messages or price expectations.
Other Faults Every Wine Professional Should Know
Although the ten areas above cover the principal subjects of this guide, there are several additional faults worth recognising. Excellently defined by AWRI
Cork taint (TCA): Often associated with damp cardboard, mouldy newspapers or musty cellars. It can suppress fruit and make a wine appear lifeless.
Brettanomyces (Brett): Can produce aromas of barnyard, horse stable, medicinal plaster, leather and smoky animal characteristics. Some tasters appreciate restrained examples, but excessive Brett can dominate and diminish fruit expression.
Mousy taint: Can produce unpleasant, mouse cage-like, stale cereal or savoury aftertastes, often becoming more noticeable after swallowing. It is a particularly useful fault for hospitality professionals to learn to recognise.
Lightstrike: Exposure to excessive light, particularly in susceptible wines, can create unpleasant struck-match, cabbage-like or other sulphur-related aromas.
Unwanted secondary fermentation: An unintended refermentation in a still wine can produce unexpected carbonation, sediment and changes in flavour.
These faults demonstrate why wine assessment requires more than simply identifying grape varieties and describing fruit flavours.

Building a Culture of Wine Knowledge in Hospitality and Retail
There is a responsibility within the wine industry to improve the standard of wine knowledge provided to consumers.
Too often, restaurant employees are expected to recommend wines without having received meaningful training. Retail staff may know which labels sell well but lack the technical understanding to explain why one wine is superior to another. Buyers may rely heavily on familiar brands, price points and distributor recommendations without conducting sufficiently critical assessments.
This represents a missed opportunity.
A knowledgeable restaurant employee can transform a customer's dining experience by recommending a wine that complements the food, suits the customer's preferences and offers genuine value.
A knowledgeable retailer can introduce customers to smaller producers and regional wines they may never otherwise discover.
A professional wine buyer can identify products that offer individuality, consistency and quality, rather than simply selecting the most recognisable commercial labels.
And a well-trained sommelier can communicate the story behind a wine, explain its characteristics and give customers the confidence to explore something different.
Wine education should therefore be an ongoing process rather than a one-off training exercise.
Every hospitality venue and independent retailer should consider introducing regular staff tastings, comparative wine assessments, basic fault recognition and practical food-and-wine matching exercises.
The more people understand what they are drinking, the more confident they become in recommending and purchasing wine.
Conclusion: Quality Is What Remains After the First Impression
Ultimately, assessing fine wine is about developing the ability to look beyond the obvious.
A deep colour, powerful aroma, generous alcohol, sweet fruit and expensive packaging might create an immediate impression, but they do not necessarily indicate excellence.
True wine quality is found in the relationship between fruit, acidity, alcohol, tannin, texture, complexity and length. It is found in freshness, balance, integration, individuality and the ability of a wine to develop and reveal more of itself with every sip.
It is also important to recognise that good winemaking is not simply about avoiding faults. It is about making positive decisions at every stage, beginning in the vineyard and continuing through harvesting, fermentation, maturation, blending and bottling.
A beautiful wine does not need to be manipulated into greatness. It needs good fruit, sound judgement, thoughtful craftsmanship and an understanding of when to intervene and when to leave nature alone.
For Winepro Australia, this philosophy is particularly important.
Supporting genuine family-owned and independent Australian producers means looking beyond the volume of wine produced, the marketing budget or the familiarity of a brand. It means recognising the people, vineyards, regional characteristics and craftsmanship behind the bottle.
There is an extraordinary amount of talent among Australia's smaller wine producers. Many are making wines of remarkable character, individuality and quality, yet their products can struggle to gain exposure in a market dominated by large commercial brands.
Educating wine lovers, retailers, restaurant workers and wine buyers is one of the best ways to change that.
The objective should always be to drink better, understand more and recognise genuine quality.
Because the best wine is not necessarily the biggest, the most expensive or the most heavily promoted.
It is the wine that brings everything together, expresses its origins, holds your attention and leaves you wanting another glass.
A final thought for wine professionals
Learn to taste, not just to drink.
The difference between knowing about wine and genuinely understanding wine is the ability to recognise what is happening inside the glass.
Train your palate. Challenge your assumptions. Recognise faults. Understand balance. Appreciate craftsmanship.
And never confuse a big commercial impression with genuine winemaking quality.
Further technical reading: The Australian Wine Research Institute's Wine Flavours, Faults and Taints and Removal of Volatile Sulphur Compounds are particularly useful resources for developing professional wine knowledge.

Who is this Glenn the Wine Guy anyway?
Glenn Malycha, affectionately known as Glenn the Wine Guy, has been a vibrant force in South Australia’s hospitality and wine industry since 1986. From fine dining management and cocktail bar management to cellar doors, state, national and export sales management, and nightclubs, his career spans iconic venues including five star Hyatt Regency Adelaide, Heaven Nightclub, Stonyfell Winery, and managing Vintners Restaurant Barossa. With deep roots in Adelaide and based in the Barossa, Glenn’s expertise also covers gaming management and TAB operations, outdoor events, public speaking, achieving merit in WSET level 3 certificate and TAFE instructor in wine, bar service, and hospitality excellence.
A passionate wine communicator, Glenn has contributed tasting notes, wine maker interviews, and judging insights to Wine in China Magazine Beijing, championing South Australian winemakers on the global stage. His leadership in wine sales, promotion and brand development has taken him across Hong Kong, Taiwan, Malaysia, China, Singapore, the UK, and Switzerland, promoting Australian fine wines.
In the digital space, wineproaustralia.com is giving local boutique producers a national voice, while happily offering free articles for all visitors to enjoy, created from decades of experience and enthusiasm, sharing insightful hospitality, educational and tourism related articles to share.
Glenn’s international impact includes a government-invited role living in Northern China, where he oversaw cellar door operations and staff training for brands like Gemtree and Bird in Hand. He was a featured speaker at the DoubleTree Hilton Shenyang for the Australia-China Business Association’s 40th anniversary and has been honoured by Bristol Who’s Who and Rotary International for dedication to service excellence.