19. Vinegar
The great thing about vinegar is that it is self preserving. The vinegar institute did a study that confirmed the shelf life of vinegar is virtually indefinite. After long periods of storage, white vinegar will remain unchanged. Vinaigrettes that contain garlic, onion, shallots, or herbs may, however, need refrigeration.
18. Donuts
Donuts can become stale or even soggy if kept in the fridge. They’ll stay fresher if kept covered at room temperature. Donuts should, however, be eaten within a few days after they are purchased.