Do Raisins Become Stale Do Raisins become stale?  What happens to them?  How should I store them?
They absolutely do. They're "dried" but they're not really dry. They will continue to dry out until they become grainy and weird. Most dried fruit is this way, with the exception of freeze dried fruit, which has the opposite problem: once you open it, it absorbs moisture from the air, and gets gummy and gross.