Colocasia esculenta is a tropical plant grown primarily for its edible corms, a root vegetable most commonly known as taro, or kalo in Hawaiian. Kachalu chaat is famous street food of Delhi. झटपट बनाइये कचालू आलू की चटपटी चाट/kachalu ki chaat/aloo chaat/kachaloo chat/Chaat Recipe. How to make Kachalu chaat This is a common savoury dish using a popular vegetable in South. So I don't think Kachalu or Arbi will ever lead to Diabetes. Colocasia esculenta (commonly known as taro) is a plant which was probably native to Malaysia.