4581 BRUPAKS BEERS OF THE WORLD CZECH PILSNER Beer Kit Brews 10 litres, an ideal refill for the BruBox. Probably the best beers produced from kits. Only the finest ingredients are used, brewing grade malt extract, fresh hops and grains and professional finings for clarity. All recipes are meticulously researched to be as close as possible to it's commercial counterpart.