Dr. Pepper is food?

I know I'm on a different road here than most of the world but really......!

Went shopping at local grocery store. I was asked if I'd like a bottle of Dr. Pepper which was on special. I said, "No thank you." I was then asked if I would like to donate "it" to the local "FOOD" bank. I politely said, "Not pop". Am I missing something here????

Food: nutriment in solid form

Nutriment: something that nourishes or promotes growth, provides energy, repairs body tissues, and maintains life.