I count 29 different cans of beer. Yes, 29. No beer bottles, no tap handles, just cans. Sure, The Red Derby has a fully stocked liquor selection, and six wines at $6/glass, but really, the comfort beverage of choice here is the canned beer. Understanding this unusual approach to beer selection requires a quick detour through the history of beer in America. In the beginning, there was beer. It was good. It was poured into…