The tangelo is a citrus fruit that is a hybrid of a tangerine and either a pomelo or a grapefruit. It may have originated in Southeast Asia over 3,500 years ago. The fruits are the size of an adult fist and have a tangerine taste, but are very juicy, to the point of not providing much flesh but producing excellent and plentiful juice. Tangelos generally have loose skin and are easier to peel than oranges. They are easily distinguished from oranges by a characteristic knob at the top of the fruit.