Butterfly pea flowers don’t really have much of a taste. If anything, they’re much like a very light green tea and taste only slightly vegetal.
In general, butterfly pea flowers are added to different tea blends and citrus drinks and aren’t typically brewed on their own. When you brew them in a tea blend, they’re almost entirely unnoticeable, as even delicate teas can overpower what little flavor they have.
That’s part of the appeal of these flowers—they add lots of color without affecting the taste of your beverages. Throw them in smoothies, desserts, teas, lemonade, whatever else you want. You won’t taste much of a difference!