Our buyers annually go to the world's largest international tool and hardware show in Cologne (Köln), Germany, and sooner or later each brings home a dozen (or more) of the beer glasses of the region. The local beer, Kölsch, is brewed only in the Cologne region and must not only conform to the German Beer Purity Act of 1516, but must also be served only in these special slim, graceful 1/5 litre (6.8 fl oz) glasses called stangen (rods). These are the champagne flutes of the beer world, only…