Pressed hops – cone-shaped
Pressed hops are a typical form of hop processing. Undesirable hops and foreign ingredients are separated from dried hops after homogenization. If need be, the hops are finally dried to the required moisture, usually 10–12%. Having been thus treated, they are then pressed by hydraulic presses into ballots or rectangular bales with a weight, as a rule, of 100–150 kg.
Granulated hops – TYPE 90
Undesirable hops and foreign ingredients are separated from dried hops after homogenization, and they are finally dried to 7–9% moisture. Having been thus treated, they are then ground to powder and granulated. The diameter of the pellets is 6 mm. The pellets are filled into aluminium foil bags filled with inert gas (N2/CO2 mixture). The most common number and weight of bags in a carton is 4 x 10 kg. Granulated hops are virtually identical to cone-shaped hops in terms of the content of substances valuable for brewing. Compared to cone-shaped hops, however, they have a more effective utilization of substances valuable for brewing, longer durability, easier and higher-quality storage, handling, and transport.
Granulated hops – TYPE 45
Undesirable hops and foreign ingredients are separated from dried hops after homogenization, and are finally dried to 7–9% moisture. At a temperature of -35 °C they are ground to powder, and the lupulin part is separated from the vegetable part on vibrating screens. By repeatedly mixing them with a precisely determined ratio of the lupulin and vegetable parts, a standardized product with the required content of alpha-bitter acids is obtained. The powder thus obtained is granulated and packed into aluminium foil bags in the same manner as with hop pellets type-90. The advantage of hop pellets type-45 is mainly a higher concentration of hop resins and simple hop dosing in view of the fact that the content of alpha-bitter substances is predetermined.