Chinese water chestnut or water chestnut, is a grass-like sedge native to Asia, Australia, tropical Africa, and various islands of the Pacific and Indian Oceans. It is grown in many countries for its edible corms. Raw water chestnuts are slightly sweet and crunchy. Boiled water chestnuts have a firm and slightly crunchy texture, with a mild and slightly nutty flavor that may easily be overpowered by seasonings or sauces with which the water chestnut is served or cooked. Water chestnuts are nutritious because they are high in fiber, low in calories, and contain no fat. They also contain several vitamins and healthy antioxidants. Water chestnuts are an excellent source of: Vitamin B6. Water chestnuts belong to the non-starchy, low-calorie fruit group, which has zero fat content and may help you lose weight. Water chest nut, also known as singhara in Hindi, is a very common autumn and winter season fruit that grows underwater.