I think I would have tasted it if I had been drinking it cold outof the fridge, but I leave it out cuz no room for it in fridge, and pour it over ice, it tastes watered down when the cubes melt, and the no caffeine makes it taste different too. I dont know what I was doing... obviously I was on auto-pilot and not paying enough attention. I am sure I will learn from this little episode and it will not happen again!!!.