What is "grobhausern"

Grobhäusern is a historical German vying game in which players bet and then compare their 4-card combinations. It is played by two to eight players using a 32-card piquet pack. The game was illegal in most places.

Scherwenzel is a form of Grobhäusern in which the Jacks or wenzels, and to some extent also the Nines, function as wildcards.