Beer soup (, , ) is a soup which is usually roux-based and made with beer. In medieval Europe, it was served as a breakfast soup,1,001 Foods to Die For - Andrews McMeel Publishing, Madison Books - Google Books sometimes poured over bread. A popular variant in Wisconsin restaurants and bars is called beer cheese soup, made with melted cheese, vegetables, and sometimes incorporating bratwurst.
Variations on the recipe use the starchiness of potato as a thickener. The Sorbian version is sweet, with cream and raisins added.
See also Beer cake Beer can chicken List of soups
References
Further reading The Soup Book - Louis P. De Gouy - Google Books. Page 79.