How to Tell When Your Homemade Wine Is Spoiling?

1. Smell:

Check for any "off-aromas." Wine can develop a vinegary or musty odor if it's spoiled. Trust your nose; unpleasant smells can indicate spoilage.

2. Appearance:

Spoiled wine may develop cloudiness or haziness. Watch out for unusual sediment or clumps in the wine, as these may be signs of spoilage.

3. Taste:

Spoiled wine often tastes flat or watery, losing its characteristic flavors and complexities. Additionally, a noticeable vinegar taste can be an indicator of spoilage.

4. Effervescence:

If your still wine (non-sparkling) suddenly starts fizzing or bubbling excessively, it could indicate the presence of unwanted microorganisms or bacteria that produce gas during fermentation.

5. Off-Flavors:

Wine can develop unpleasant off-flavors due to oxidation, exposure to heat or light, or microbial spoilage. These flavors may include corkiness, cardboardiness, or even a nail-polish remover-like smell.

6. Color Changes:

White wines may start to brown or turn amber, while red wines may lose their vibrant color or become dull. These color deviations could indicate spoilage.

7. Sulfur Smell:

In extreme cases, spoiled wine can produce an overpowering sulfur or rotten-egg smell. This is a significant sign of spoilage and should not be ignored.

Remember that if you have any concerns or suspicions about the quality or safety of your homemade wine, it's best to discard it and start a new batch. Homemade wines are usually best consumed within a few months to ensure the best flavor and quality.