Hibiscus Flowers are on that list, as they are cooling, sweet, astringent, and in Ayurveda, pitta pacifying. Hibiscus helps to purify the blood, the heart (physically and spiritually) and also improve skin complexion, the circulatory, reproductive, and nervous system.
For a simple hibiscus infusion, let 1/4 ounce of dried Hibiscus Flowers sit in 1 pint of cool water for about 15 minutes. Traditional Medicinals has a great Hibiscus Blend if you'd rather use tea bags instead of loose flowers. Locally, I recommend The Kefiry's fermented "Hibiscus Maya: Royal Flower Elixir" - very refreshing and just sweet enough. Enjoy this last week of summer! Xo