Butterfly pea flower is a special plant that when dried and made into a tea creates an incredible drink that is essentially another version of a mood ring. Originating from Southeast Asia, it has a withered bluish-gray tone when dried. But add different ingredients and it changes when made into a drink. For instance, adding anything changes it to a deep cobalt color will emerge, squeezing in some lemon alters into a rich violet drink and roselle hibiscus flowers turns it bright red.
As for the taste, the Butterfly pea flower tea boasts earthy and woody flavors, similar to a fine green tea. My Modern Met reports, however, "According to tea expert Kathy Chan, 'The Thai like it super sweet so they’ll do it with some sort of citrus—lemon or lime is best—and palm sugar.'”