How do you tell if ice wine is bad?

1. Check the color. Ice wine should be a pale yellow or gold color. If it is brown or cloudy, it is likely past its prime.

2. Smell the wine. Ice wine should have a sweet and fruity aroma. If it smells sour or musty, it is likely spoiled.

3. Taste the wine. Ice wine should be sweet and slightly tart. If it is bitter or astringent, it is likely past its prime.

4. Look for crystallization. Ice wine is made from grapes that have been frozen, so it is normal for some crystals to form in the wine. However, if there are large crystals or chunks of ice in the wine, it is likely that the wine has been frozen and thawed multiple times, which can damage the flavor.

5. Check the expiration date. Most ice wines have an expiration date of about 5 years. If the wine you are considering is past its expiration date, it is likely past its prime.