The grapefruit flavor/scent is pretty authentic! Sharp, sweet, and sour in just the right way. Really, it might be too authentic since I enjoy grapefruit flavored things, but not grapefruit itself. Fresh, it was a little much for me, but it’s mellowed since I opened it two months ago. I never really reach for this one since I don’t love it, but when I make myself a cold mug of it, it’s all right. I think the cardamom in this blend is a weird choice. Fans of grapefruit would probably like it.