Rasa
Rasa is the taste of a food — sweet, sour, salty, pungent, bitter, astringent — the first key to its action on the doshas. Discover the 6 rasas.
Rasa means "taste" or "flavour", but also "sap" and "essence" in Sanskrit. In Ayurvedic dietetics it is the first key to reading a food: its taste announces its action on the doshas before any nutritional analysis. Ayurveda recognises six rasas: sweet, sour, salty, pungent, bitter and astringent. Each is composed of two elements and acts in a predictable way — sweet (earth + water) builds and soothes Vata and Pitta but increases Kapha; pungent (fire + air) stimulates and lightens Kapha but inflames Pitta and dries out Vata.
The golden rule: a complete meal contains all six tastes, in proportions suited to your constitution and the season. That is how a plate truly satisfies — a craving for something sweet at the end of a meal often betrays a lunch entirely lacking in bitter and astringent tastes, which is the case with most Western menus.
The word carries a second important meaning: rasa is also the first of the seven tissues (dhatus), the plasma produced directly by agni, the digestive fire, which nourishes all the others. This double meaning is no accident: the quality of taste in what you eat determines the quality of the first tissue. To master this grammar of taste, read the 6 tastes, Ayurveda’s grammar of flavour and our guide to Ayurvedic spices.