Identifying and Avoiding Poor Quality Wines
Not all bad wine is 'off' or spoiled, but some flaws are indicators of poor winemaking. Understanding these common defects can help you make more informed purchases and save you from an unpleasant tasting experience.
How to spot common wine faults
- Oxidized Wine: Just like a sliced apple turns brown, wine exposed to excessive oxygen loses its freshness. In white wines, this can cause a deep amber color and nutty, sherry-like aromas. For reds, the vibrant color dulls to a brownish-orange hue, and flavors can taste flat or caramelized.
- Cork Taint (TCA): This fault is not caused by pieces of cork in the wine but by a chemical compound called TCA. It imparts a telltale musty aroma reminiscent of wet newspaper, moldy cardboard, or a damp basement. The taint can mute the wine's flavors and is unfortunately not fixable once present.
- Heat Damage ('Cooked Wine'): This occurs when wine is exposed to extreme heat during storage or transport. It results in a 'cooked' or 'maderized' flavor profile with jammy, stewed fruit notes and a flat character. Evidence of heat damage can sometimes be seen in a bottle where the cork has slightly pushed out.
- Volatile Acidity (VA): High levels of acetic acid and ethyl acetate can give a wine unpleasant aromas like nail polish remover or vinegar. While a small amount can add complexity, too much is a clear fault.
- Excessive Sulfur Compounds: Though sulfur is a common wine additive, excessively high levels can lead to off-putting smells like burnt rubber, garlic, or a struck match. Decanting can sometimes help 'blow off' these aromas.
The dangers of mass-produced wines
Some industrial, mass-produced wines can contain a host of additives used to create a consistent, palatable, but often bland product. You might want to avoid bottles with vague language like 'red blend' and generic descriptors like 'smooth and easy'. These can indicate a reliance on additives like Mega Purple, a highly concentrated colorant used to standardize batches. In contrast, well-made wines from quality producers focus on expressing the character of the grape and its terroir.
Health Considerations: Allergies and Intolerances
For some, the compounds in certain wines can cause adverse reactions, from headaches to more severe allergic symptoms.
Histamines: Why red wine is a common trigger
Histamines are natural compounds found in fermented foods, and red wines typically have much higher levels than white wines due to their longer fermentation process with the grape skins. For individuals with histamine intolerance, red wine can cause headaches, flushed skin, or respiratory issues. Taking an antihistamine beforehand can sometimes mitigate these effects.
Sulfite sensitivities and what to look for
Sulfites are preservatives added to almost all wines, though organic and 'natural' wines may have very low to zero added sulfites. For the small portion of the population with a sulfite sensitivity, this can trigger asthma attacks or other allergic symptoms. If you are sensitive, look for bottles labeled 'no sulfites added' or consider US-certified organic wines.
Fining agents and dietary restrictions
Some winemakers use animal products as fining agents to clarify the wine, such as egg whites, milk protein, or fish bladder. These are generally filtered out, but for vegans or those with severe allergies, traces can remain. To avoid these, seek out vegan-friendly wines, which are often filtered with bentonite clay, or choose unfiltered wines.
Food Pairing Faux Pas
Pairing the wrong wine with food can ruin both the wine and the dish. Here are some pairings to avoid.
Sweet wines for savory cooking
Unless a recipe specifically calls for it, avoid cooking with sweet wines like Moscato or late-harvest varieties. The sweetness can become concentrated during cooking, overwhelming the dish. Stick to dry wines for savory applications.
High-alcohol wines with spicy dishes
Pairing a high-alcohol wine (e.g., a Zinfandel with 15% ABV) with spicy food can amplify the heat and overpower your palate. Instead, reach for low-alcohol options like an off-dry Riesling to soothe the spice.
Mismatched weight and flavor profiles
A full-bodied, robust red with a light, delicate fish dish will overshadow the food. Likewise, a very acidic white with a rich, creamy sauce can clash unpleasantly. Seek balance between the wine and the food.
Comparison Table: How to Spot a Bad Wine
| Feature | Bad Wine Indicators | Good Wine Indicators | 
|---|---|---|
| Appearance | Cloudy, dull, or brownish in color (for white) | Bright, clear, and vibrant for its type | 
| Aroma | Smells musty (corked), like vinegar, nail polish, or wet cardboard | Complex, pleasant aromas of fruit, flowers, or spices | 
| Flavor | Flat, overly acidic, unbalanced, or one-dimensional | Harmonious and balanced with a pleasant, lasting finish | 
| Label | Vague terms like "Red Blend," no specific region mentioned | Details specific grape varieties, vintage, and region | 
Conclusion: Drink Smarter, Not Just More
Knowing what wine you should avoid is a key part of becoming a more discerning and confident wine drinker. By understanding common faults, recognizing triggers for sensitivities like histamines and sulfites, and being mindful of quality indicators on the label, you can minimize unpleasant surprises. Ultimately, the best wine is the one you enjoy, but informed avoidance can help ensure every bottle is a delightful discovery. For more detailed information on specific wine faults, visit the knowledgeable resources at Wine Folly: https://winefolly.com/tips/wine-faults/.