Sandhana kalpana is the preparation of self generated alcohol. All the preparations that are resulting from FERMENTATION procedure come under SANDHANA KALPANA. Sandhana kalpana is a special technique to prepare most effective medicines like Asava and Aristas. The medicines prepared through Sandhana kriya are quick in action, long shelf life, palatability and has nutritive value.The self-generated alcohol is the key factor behind the success of Sandhana kalpana.