Carlsberg is made from 100% pure malt. Hops are our secret ingredient. Carlsberg Aroma Hop Extract is used in the process of making this beer. In 1879, Carlsberg was the first brewery to produce a purified brewers yeast, the Saccharomyces Carlsbergensis. Since then weve been constantly working to improve our yeasts taste and the stability of our beer. We do it by using a classic breeding method, which means it can take up to 20 trials and several years to obtain a new yeast.