How do you know if wine has gone bad?
How to Tell If Wine Has Gone Bad The smell is off. If a wine’s aroma is moldy or resembles a musty basement, wet cardboard, or vinegar, it’s turned. The red wine tastes sweet. The cork is pushed out slightly from the bottle. The wine is a brownish color. You detect astringent or chemically flavors. It tastes fizzy, but it’s not a sparkling wine.