One time when I was at an Italian restaurant with a couple friends, we were eating the sugar packets straight... anyways, we convinced my one friend that the pink one tasted even better straight. So he tried it, almost puked, and drank two full Cokes before he got the taste out of his mouth. So than we convinced my other friend that the blue ones were actually the better ones. And he tried it, with almost the same results. My vote's for sucrose, but it was incredibly funny to see them dying after they ate the pink and blue sugar packets...