One of only a handful of traditional German ales. Kölsch is the local brew of the city of Cologne (Köln in German). It is one of the palest German beers made. In 1948, the brewers of Kölsch joined forces in the so-called Kölsch Convention and formalized the Kölsch style in terms of modern brewing specifications. Kölsch gets its characteristic, slightly fruity flavor from its own special ale yeast, with which the brew is cool-fermented. The fermentation is followed by an extensive lagering period, which makes it somewhat of a hybrid between ale and lager.