Tangelos are hybrid citrus fruits. The name derives from tangerine and pomelo, but the name covers more ground than that. The tangerine half may include include anything related to mandarin oranges. A pomelo is large thick-skinned grapefruit-like fruit, usually somewhat pear-shaped. The pomelo half may include anything related to grapefruit. There are quite a few different varieties of tangelo, some more interesting than others. In Jamaica in 1924, a tree of an uncertain origins, some say a mandarin and a grapefruit, was discovered with an especially interesting fruit.