Sloe

Scientific Name of Plant
Prunus spinosa

Description
This wild European plum is the fruit of the blackthorn (Prunus spinosa), which also bears showy white flowers. The purple skinned sloe has an extremely tart yellow flesh. Though too sour for out-of-hand eating, sloes are used for jams, jellies and to flavor Liqueurs such as Prunelle and Sloe Gin. They're not generally available fresh in the United States.