Taiwan grows roughly 14 varieties of prunes; the main variety has red flesh, which contains sodium, calcium, phosphorus, iron, vitamins A, C, B1, and B2, etc. This heart-shaped fruit has red skin and a blood red or purple flesh and tastes slightly acidic. The skins of prunes have fruit powder. Prunes are very juicy with a delicate flesh and sweetly acidic flavor; people can’t resist them.