The use of hop extracts in brewing.

Friedrich, E.F.

Abstract
A review of the nomenclature of hop extracts and concentrates as proposed by the E.B.C. is presented. The advantages claimed for hop extracts are discussed and suggestions are made as to their purchase. The methods proposed for the analysis of hop extracts and for estimating their brewing value are critically examined. Hop extracts differ in their content of alpha acid depending on the amount in the original hops and the nature of the solvent used for the extraction. Other things being equal, the brewer should buy the extracts with the highest alpha acid content and the alpha acid content of the hops being replaced.
Keywords: brewing hop extract hopping