Citron is a dark lemon color similar to that of the fruit citron. Fillings include orange-flavored ricotta, almond paste, and candied peel of citron. Also popular are candied celery, lemon, citron, rice, caramel, and pineapple. Grey Goose Le Citron is a lemon-flavored vodka. The International Bartenders Association recipe is based on vodka citron, lemon-flavored vodka. The lemon is a hybrid of pummelo, citron, and mandarin. The Diamante citron is one of the citrus fruits. There is also a specific variety of citron called etrog. The citron is an old and original citrus species. The only other known sweet citron is the Corsican. Some claim that even the Florentine citron is not pure citron, but a citron hybrid. Cheetahs in the Kalahari have been reported feeding on citron melons. Among the pulpless are also some fingered varieties and the Yemenite citron. Netherlands reportedly expressed interest in the "Golden Citron" CI center in November 1999. Alfredo was bought by a very cruel man named Citron.