In Ayurveda there are six different tastes (rasas); sweet, sour, salty, pungent (spicy), bitter and astringent.Each taste has an effect on three doshas (natures or constitutions), Vata, Pitta and Kapha.These six tastes has the power to solve all issues you face on these three doshas.Find more details about this at here: http://ayugreen.com/six-different-tastes-in-ayurveda/