Finally, dropping both sweet and sour tastes, salt and pungent combine with astringent and bitter to form the fifteenth and the last group of four tastes.
By dropping from the total complex of tastes one taste at a time, there are formed six groups of quinary tastes. Then there are six groups of single tastes and the single group of six tastes.
Thus, the scholars of rasa, have mentioned fifty-seven combinations and sixty-three forms of rasas (after adding six pure forms of rasas in fifty-seven combinations) on the basis of their applicability.