Raisins, Currants and Sultanas are types of dried grapes. Raisins are large, often seedless and a wrinkled black. Originally, raisins were seeded but Thompson Seedless grapes transformed raisins to a seedless type. Raisins are used for snacking and in mueslis, but are mainly used in baking, either on their own or mixed in with the other types of dried grape. Particularly popular in fruit cakes.
Dowell, P., Bailey, A. (1980) The Book of Ingredients, Dorling Kindersley. ISBN 0718119150.