Anonymous wrote:Dry spices don't "expire". I would assume they lose flavor as they get older.
This. They are less flavoring, which is the entire point of spices. But they are rarely "bad" in that they will make you sick.
My leafy spices (oregano, thyme, parsley, basil) I tend to use up on a regular schedule, so I don't have an issue with those are much. But the powders definitely sit for longer, especially something like nutmeg that I am using on 1/4-1/2 of a teaspoon at a time while doing holiday baking. If something is obviously old or doesn't smell fragrant I may put it on my list to replace.