Water chestnuts are the tubers of the Eleocharis dulcis plant, which grows in the stagnant waters of southern and eastern Asia. The tubers are usually oval or spherical in shape, 2-4 cm in size. They have hard, brown skin and white, crisp flesh. Raw water chestnuts have a sweet, sugary taste. Cooked water chestnuts are crisp and have a mild flavour. Fried water chestnuts are tasty and crunchy. Roasted water chestnuts are sweet and juicy. Water chestnuts are rich in fibre, vitamins and minerals.