Butterfly pea flower tea is a brilliant blue caffeine-free herbal drink, made by steeping the bright blue flowers of the Clitoria ternatea plant in hot water. The tea is often served with lemon or lemongrass and honey and makes an excellent iced tea.
Widely used in Thailand and Vietnam for its traditional health benefits, this flower tea is becoming more common in Western cultures. The flowers contain antioxidants called anthocyanins, which are also found in blueberries, elderberries, and cranberries.
See https://www.teamiblends.com/blogs/lifestyle/benefits-of-butterfly-tea,
Please note that statements about the health benefits of butterfly pea flower tea have not been evaluated by the Food and Drug Administration. Butterfly pea flower tea is not intended to diagnose, treat, cure, or prevent any disease.