How to know if a wine is corked

Wine enthusiasts around the world have encountered the term “” at some point in their oenophilic journeys. A “corked” wine refers to a bottle of wine that has been contaminated with cork taint, causing undesirable flavors and aromas. While it may seem intimidating to determine whether a wine is corked or not, there are a few simple steps you can follow to identify this unfortunate flaw.

First and foremost, it is important to understand what causes cork taint. Cork taint occurs when a wine bottle’s cork is contaminated with a chemical compound called TCA (2,4,6-trichloroanisole). This compound can be found in natural corks, usually a result of the interaction between cork, wine, and certain types of bacteria. When TCA is present in a wine, it imparts an unpleasant smell and , akin to damp cardboard or wet dog.

Now, let’s explore the various ways to determine if a wine is corked:

1. Assess the smell: The most apparent sign of cork taint is a musty or moldy odor. When you first open a bottle of wine, give it a good sniff. If you detect any unpleasant aromas that are not typical of the wine’s varietal or style, it could be an indication of cork taint.

2. Taste for bitterness or lack of flavor: Take a small sip and allow the wine to coat your palate. If you notice a lack of fruit flavors or a pronounced bitterness, it could be a sign of a corked wine. The taint often masks the wine’s natural flavors and makes it appear flat or muted.

3. Evaluate the color: While not a foolproof method, inspecting the wine’s color can provide some clues. A wine affected by cork taint may exhibit a slight brownish or dull appearance. However, it’s important to note that other factors, such as aging or grape variety, can also influence a wine’s color.

4. Observe the cork: After removing the cork, give it a quick examination. If the cork appears excessively moldy, damp, or gives off an unpleasant odor, it could indicate potential cork taint. However, keep in mind that a clean, intact cork does not guarantee the absence of cork taint.

5. Compare with previous experiences: Experienced wine drinkers often rely on their tasting history to identify corked wine. If you have tasted the same wine before and notice a stark difference in aroma or taste, it could be a sign that the bottle is corked.

It’s important to note that cork taint affects a small percentage of wines, estimated to be around 3-5%. Additionally, not every off-putting aroma or taste in wine can be attributed to cork taint. Other factors, such as excessive sulfur dioxide, bacterial spoilage, or poor storage conditions, can also contribute to undesirable wine characteristics.

If you suspect a wine is corked, it is always a good idea to seek a second opinion from another person familiar with cork taint. Sometimes, individuals have varying sensitivity levels to TCA and can help confirm your assessment.

Remember, even the most seasoned sommeliers occasionally encounter corked wines. It is an unfortunate reality of the wine industry. By familiarizing yourself with the signs of cork taint, you can make an informed decision when assessing the quality of a bottle.