Made the time to steep this before bedtime. It is! It does! It was as indigo-blue as my old flannel bathrobe. I forgot to check to see if it turns your tongue blue. Besides being lovely to ponder in the cup, it is gently and pleasantly blueberry/lemon flavored. Smooth, not tart. Evidently there’s some extra alchemy that happens if you add lemon; we’ll have to leave that for the next time.