The summer prescription is the easiest of the six to follow and the easiest to overshoot.
What the texts ask for: madhura — the sweet taste, meaning grains, ripe fruit, milk, ghee, coconut, not confectionery. Sheeta — cooling in quality, which is a property of the substance rather than its temperature. Drava — liquid. Snigdha — unctuous, oily.
So: rice, wheat if it suits you, ripe sweet fruit, melons, grapes, coconut in every form, cucumber, milk, ghee, thin buttermilk with cumin and coriander, mint, fennel, sandalwood, vetiver. Meals lighter and more frequent. Water carried and drunk through the day rather than in gulps.
What the texts specifically restrict: sour, salty and pungent, the three heating tastes; alcohol, which is called out by name and, where it is taken at all, is prescribed heavily diluted; hard exercise; and midday sun.
And now the distinction people miss. Cooling and cold are not the same thing. Coriander is cooling and can be served warm. Iced water is cold and, in Ayurvedic terms, is a digestive suppressant — it does not cool the body so much as extinguish the fire that is already at its weakest point in the year. The tradition's summer drink is cool water infused with vetiver or sandalwood, or thin buttermilk, or coconut water at room temperature. Not ice.
The same logic quietly explains why so many people digest badly in summer and blame the food.