Amsul, also known as kokum, is a souring agent commonly used in Indian cuisine, particularly in the coastal regions of Maharashtra, Goa, and Karnataka. It comes from the fruit of the kokum tree (Garcinia indica) and adds a tangy flavor to dishes. Amsul is available in various forms, including dried kokum petals or slices, kokum concentrate, and kokum syrup. In cooking, it's often used to impart a sour taste to curries, dals (lentil dishes), soups, and drinks. Amsul is also valued for its digestive properties and is sometimes consumed in the form of a digestive tonic or as part of traditional remedies.