Soursops are the spiny green fruits of a tropical American tree of the custard-apple family. Its tart white flesh is popular for making drinks, particularly in the West Indies. Its sweeter relative the custard apple is also known as the sweetsop. In both cases the sop refers to the white flesh, which supposedly resembles milk-soaked bread (known in former times as sops).
Subjects: Cookery, Food, and Drink.