He says the benefits of beer are due to a high quantity of polyphenols, which can boost the immune system. The benefits were obvious. If having a beer helped his athletes recover faster, they could train with more intensity.
Scherr has taken that study to the Olympics. The German brewery Krombacher has provided about 1,000 gallons of non-alcoholic beer for German athletes, the Times reports. Non-alcoholic beers, which are marketed as a sports drink in Germany, have become popular for German athletes partly because it has a lower sugar concentration than sports drinks like Gatorade. They're even available in many gyms.
Scherr hasn't specifically prescribed beer for the German skiers, but his recommendation and research have most of them doing it anyhow. It's not really a hard sell.