[Old Teufel Hunden]

"Interestingly, it can be argued that Budweiser isn’t technically beer to begin with, as it mostly derived from rice, not barley"

The three main ingredients to make up beer are water, grain and yeast. Hops was only introduced about 500 years ago in Europe so that was not always part of beer. Rice is a grain, so therefore budweiser can be considered a beer. You have heard of wheat beer I assume? Instead of having barley in it, it has wheat as the grain.

[Freedom4US]

You’re referring to the “rheinheitsgebot” or beer purity law, of course, of 16 something.

Actually it stated that beer could only contain barley, hops, and water.

Yeast hadn’t been “discovered” yet, but was included later once it was isolated. Wheat beer got a pass, simply because it’s so danged good I’d wager. It still contains about 50 per cent barley, though. In fact I prefer it, mostly.