Butterfly Pea Flower (Clitoria Ternatea L.) also called Blue Pea has a woody and earthy flavor that's reminiscent of green tea. It’s most interesting part is its ability to change color depending on the pH of any ingredient that's added to it.  
 
At first, beverage has a deep, midnight blue color. It will turn to beautiful, rich violet if add a squeeze of lemon or any acidic liquid and turn to bright red if add hibiscus flowers.