In fact, I had always wondered that. Though this was the first time I’d ever formally met Koch, I’d “met” him in the past at a few beer festivals. Those sorts of events are always kind of Bacchanalian shit shows, with people imbibing dozens of beer samples in a short period and soon stumbling around large convention halls drunk of their asses. Brewers included. But not Koch, who I’d long noticed was always lucid, always able to hold court, and hold his own with those much younger than him. This billionaire brewing raconteur was doing likewise with me at 4 PM on a Thursday afternoon despite the fact we were both now several beers deep. So what was the secret?

“Yeast!”

“Yeast?”

“Active yeast. Like you get at the grocery store.”

Koch told me that for years he has swallowed your standard Fleischmann’s dry yeast before he drinks, stirring the white powdery substance in with some yogurt to make it more palatable.