Canned cranberry sauce is the apocalypse survivor of condiments. Unopened, it can last for years in your pantry. The can says “best by” but it really means “best for generations.”
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Once opened, though, it’s just a mortal jelly. It lasts seven to ten days in the fridge, max. After that, it’s a science experiment. Homemade sauce? That’s more delicate—usually good for 10-14 days, because it doesn’t have the can’s industrial voodoo.
Surprising fact: during the 1918 flu pandemic, cranberries were rationed because they were thought to cure “languor.” Spoiler: they don’t. But eating bad cranberry sauce will give you a different kind of languor, involving the toilet.
