Casks

Traditionally casks were made of wood though most modern casks are made with aluminum or stainless steel and are barrel-shaped. In the U.S., drought vessels are commonly called “kegs” made from metal and are cylindrical in shape. Unlike a cask, a keg has only one hole, which is in the center of the head. Casks have two holes, one hole is situated in one of the heads for drawing beer and the other hole is in the middle of the arched side for drawing air.