Beer is produced through alcoholic fermentation. In the beer production process, malted barley grains are ground and mixed with hot water to activate enzymes in the malt. Once the starches have been converted into sugar, the solution produced is transferred into a large vessel with a false bottom at its base, consisting of a stainless steel milled plate that acts as a filter. The solution drains out through the slots in the plate, leaving the solid residues inside the vessel. These residues are subsequently compressed to extract any remaining liquid and then sold as livestock feed. The solution drained through the filter moves on to the subsequent processing phases of boiling, hopping, cooling and oxygenation.
Costacurta’s milled plates are used inside the filtration tank and are made from stainless steel to guarantee the highest possible level of cleanliness and hygiene. The milled areas are continuous and precise in order to guarantee correct filtration. Correct filtration is extremely important in order to prevent the husks from passing through to the subsequent boiling phase, which would cause bitter substances to be released into the beer.