Pernštejn Semi-dark beer The basic ingredients for the semi-dark beer are special malts. These malts are designed to produce dark beers but they are mixed with light malt. It results in taste, smell and colour at the interface between light and dark beer. Medium-deep fermentation ensures the desire alcohol content and a pleasant feeling after drinking. Selected ingredients ensure this beer has a pleasant hoppy bitternes and aroma. Strong bite and higher foaming are standard indicators for this type of beer.