Sour cherries, unlike sweet, are just about the sharpest taste you can get from a stone fruit. Eaten raw, these little gems will make your mouth hurt and your face flare up with weird expressions (just try one without making a face). They’re as crimson as cranberries once crushed up. But when cooked with a little sugar, sour cherries take on a unique, classic-candy flavor, which you can’t get from sweet cherries. Not by a long shot.