A metal beer mug is a mug made of a metal or metallic alloy and used for drinking beer. Several are seen in the La Louisiane tavern.
Overview
The mugs are made from a metallic alloy, either brass, bronze, pewter or other nonferrous alloy. They have a lid, made as well from metal.
History
Wilhelm and his German friends are seen at the tavern, drinking beer from these type of metal mugs, before switching to schnapps.