Water - Technically not a food but keeps us alive. Check!
Barely - Had soup with this stuff in it once... Check!
Hops - Not sure what it is, but we can grow it. Check!
Yeast - It’s in bread, so CHECK!!!!
Given what we know is in beer, I do believe beer to be a food. Eat up, mates!
Beer was part of the daily diet of Egyptian pharaohs over 5,000 years ago. Then, it was made from baked barley bread, and was also used in religious practices.[41] During the building of the Great Pyramids in Giza, Egypt, each worker got a daily ration of four to five liters of beer, which served as both nutrition and refreshment that was crucial to the pyramids' construction.[42]