How do you know when grapes have gone bad?

* Color: Fresh grapes should be plump and have a deep, vibrant color. As they start to go bad, they may become dull or develop brown spots.

* Texture: Fresh grapes should be firm to the touch. As they start to go bad, they may become soft or mushy.

* Smell: Fresh grapes should have a sweet, slightly tart smell. As they start to go bad, they may develop a sour or off smell.

* Taste: Fresh grapes should be sweet and juicy. As they start to go bad, they may become sour or bitter.

If you notice any of these signs, it's best to discard the grapes. Eating spoiled grapes can lead to food poisoning.

Here are some tips for storing grapes to keep them fresh longer:

* Store grapes in the refrigerator in a plastic bag or container.

* Wash the grapes before eating them.

* If you're not going to eat the grapes within a few days, you can freeze them. To do this, wash the grapes and then place them in a freezer-safe bag. Freeze the grapes for up to 6 months.