Karl 0.0

Karlsberg Brauerei has remained a family business across four generations and is currently led by Christian Weber. Karl 0.0 is the brewery's dedicated AF sub-brand, covering pilsner and radler styles. A radler is a traditional German combination of beer and citrus juice or lemonade, a format that sits naturally in a low-alcohol context and has become a common entry point for breweries moving into the AF category.

The brand markets Karl 0.0 as isotonic, meaning it is formulated to match the osmotic balance of body fluids, and as low in calories. This combination positions it at the fitness-focused end of the AF beer market, aimed at active drinkers looking for a post-activity refreshment with the character of a proper German lager.

Karl 0.0 is the AF offering of an established mainstream German lager brewer, positioned at the active-lifestyle end of the AF beer category rather than the craft or premium end.