Bock is a strong lager (traditionally, and sometimes still, an ale, as in the case of at least some weizenbocks), of German origin. Several substyles exist, including: * Maibock (literally, the month of May bock), a paler, more hopped version generally made for consumption at spring festivals. Due to its lighter color, it is also referred to as helles bock, heller bock; from German helle, bright, light in color; * Doppelbock (literally, double bock), a stronger and maltier version; * Weizenbock (literally, wheat bock), a version using 40–60% wheat, and * Eisbock (literally, ice bock), a much stronger version made by partially freezing the beer and removing the ice that forms.