Test: GEA Brewery Systems has developed an innovative method for the efficient use of hop extract. The investment in the HOPSTAR® Iso equipment for homogenization and isomerization of hop extract suspension is characterized by the efficient and sustainable use of hops, especially the alpha acids. With a possible reduction of hop dosing by 30 %, every brewer can easily determine how far his annual purchasing costs for hops will be reduced. In addition, with regard to the energy expenditure during wort boiling, savings of up to 50% of the originally required heat are possible.