Roland Sliced Water Chestnuts are the edible tubers of a water plant indigenous to Southeast Asia. Water chestnuts are generally the size of a nickel approximately 1/8 inch thick. They have a firm crunchy white texture and a hint of sweetness. Sliced Water Chestnuts are a basic vegetable ingredient for a wide range of Asian dishes. They are fully cooked, just need to be heated and added to your preferred dish.