Sour cherry is more like the wild cherry, but it has an acidic fruit. Also known as Prunus cerasus, it is very tart to eat raw and is primarily used for cooking. The fruit is smaller in size than sweet cherry and has two varieties. One is the dark-red morello cherry and the other is lighter-red amarelle cherry. These are mostly used as an ingredient in soups, pies and pork dishes. These are used by combining with sugar to balance the tartness and also used in dried form. Thus, sour cherries are a common ingredient of various, preserves, drinks and desserts.