How to make Vatha Kullambu: Easily prepare authentic Vatha Kuzhambu with Kairusi Vatha Kuzhambu Powder. This tangy tamarind-based curry is made flavorful with sun-dried berries (vathal) and aromatic spices. Simply mix the powder with tamarind extract and water, then simmer for a delicious, traditional South Indian dish. Perfect with steamed rice!