How can you tell if red wine is bad after opening?

Answered by Louis Krause

As a sommelier and brewer, I have had my fair share of experiences with opened bottles of . There are several telltale signs that can indicate if a red has gone bad after opening. Let me guide you through the process of identifying a spoiled red wine.

1. Visual Clues:
When you pour a glass of red wine, take a close look at its color. A healthy red wine should have a vibrant and rich hue. However, if the wine has turned brownish or has a noticeable change in color, it is a strong indication that it might be spoiled. Oxidation, often caused by exposure to oxygen or light, can significantly impact the color of red wine and make it less appealing.

2. Aromas and Smells:
The aroma of a red wine can provide valuable insights into its condition. Upon opening the bottle, take a moment to sniff the wine. A spoiled red wine may have off-putting odors such as vinegar, wet cardboard, or rotten eggs. These unpleasant smells are signs of spoilage due to bacterial activity or excessive exposure to oxygen. Trust your nose and if something smells off, it's best to avoid drinking it.

3. Taste Test:
The ultimate test of a red wine's quality is, of course, the taste. Take a small sip and let it coat your palate. If the wine tastes noticeably different from its usual characteristics, it might have gone bad. Spoiled red wine can taste sour, vinegary, or even slightly fizzy due to the presence of unwanted bacteria. It may also lack the depth, complexity, and balance that a good red wine typically possesses.

4. Texture and Mouthfeel:
Pay attention to the texture and mouthfeel of the wine as well. If the wine feels slimy, oily, or gritty on your tongue, it could be a sign of spoilage. Bacterial activity can alter the texture of the wine, giving it an unpleasant mouthfeel. Additionally, if the wine feels flat or lacks the usual acidity or tannins, it might have deteriorated.

5. Storage Conditions:
Consider the storage conditions of the red wine before opening it. Wine is sensitive to temperature fluctuations and excessive exposure to light. If the wine has been stored inappropriately, such as being exposed to high temperatures or direct sunlight, it is more likely to have gone bad. Proper storage is crucial to maintaining the quality and longevity of a bottle of red wine.

6. Trust Your Instincts:
Ultimately, trust your instincts when assessing the quality of an opened bottle of red wine. If something feels off or doesn't seem right, it's better to err on the side of caution and not consume it. Your senses are powerful tools in determining if a red wine has gone bad, so listen to what they are telling you.

To summarize, when assessing the condition of an opened bottle of red wine, consider its visual appearance, aroma, taste, texture, and storage conditions. If there are noticeable changes in color, unpleasant smells, off-putting flavors, unusual texture, or improper storage, it is likely that the wine has gone bad. Remember, it's always better to be safe than sorry when it comes to enjoying a good glass of red wine.