Expiration & Storage Tips
When does water chestnut expire?
Unopened canned water chestnuts generally have a shelf life of a year or more past the printed expiration date. After opening, they should be stored in a tightly sealed plastic or glass container in the refrigerator and used within a week. Homemade cooked dishes with water chestnuts should ideally be eaten within 4 to 5 days. Fresh water chestnuts, which may be harder to come by, have a fridge life of about two weeks in the produce drawer. If kept in the freezer, blanched and peeled water chestnuts can last up to a year.
How do you tell if water chestnut is bad?
For fresh water chestnuts, check for sliminess, mold, or an unpleasant smell to tell if they've gone bad. If they have been peeled, they should be white and crisp; any discoloration may indicate that they are no longer fresh. For canned water chestnuts, any sign of contamination—such as swelling or leaking cans, rust, or spoiled smell—means they are not safe to eat. Any mold, sour smell, or change in taste in a cooked dish containing water chestnuts also suggests the dish has spoiled.
Tips for storing water chestnut to extend shelf life
• Store unopened canned water chestnuts in a cool, dry place, away from direct sunlight.
• On opening the can, transfer the water chestnuts along with their liquid to a tightly sealing container and refrigerate.
• To store fresh water chestnuts, keep them unpeeled in the crisper drawer of your fridge. This maintains their freshness and crunch.
• To freeze water chestnuts, first blanch and peel them, then allow them to cool completely. Store in freezer-safe bags or containers with as little air as possible to prevent freezer burn.
• When ready to use frozen water chestnuts, thaw them in the refrigerator overnight for best results.