Sour cherries, also known as tart or pie cherries, are small, round stone fruits with vibrant red skin and juicy, tangy flesh. Unlike their sweeter counterparts, sour cherries have a bold, mouth-puckering flavor that makes them ideal for baking, preserving, and sauces. Their high acidity and concentrated cherry essence shine in pies, jams, and compotes. Harvested at peak ripeness, they’re delicate and highly perishable, often available only for a short window in midsummer.Related to other stone fruit like peaches and plums, these sweet treats have a long history. Archaeologists have discovered fossilized cherry pits in prehistoric caves throughout Europe and Asia and cherries are mentioned in ancient Greek writings. Bake a cherry clafoutis; simmer into a jam to accompany cheese; eat out of hand.