A citron is a large citrus fruit with a thick, bumpy rind and a tart, aromatic flesh that is usually not eaten raw. Citrons are one of the original citrus species, and are believed to have originated in Southeast Asia. They are commonly used in preserving, baking, and candying, and are also used in traditional medicine for their health benefits. Citrons are often prized for their fragrant peel, which is used to flavor food and drinks, and for their ornamental value in gardens and landscapes.