Ice beer originated in Canada, although it is essentially based on the German Eisbock style of beer. The first ice beer marketed in the United States was "Molson Ice" which was introduced in April 1993, although the process was patented earlier by Labatt, instigating the so-called "Ice Beer Wars" of the 1990s. Common ice beer brands in Canada in 2017, with approximately 5.5 to 6 per cent alcohol content, include Carling Ice, Molson Keystone Ice, Busch Ice, Old Milwaukee Ice, Brick's Laker Ice and Labatt Ice. There is a Labatt Maximum Ice too, with 7.1 per cent alcohol content.