Process for preparing a fermented beverage comprising addition of a natural source of iso-alpha-acids and a metal oxide such as magnesium oxide to a heated liquid before addition to the wort

摘要

Disclosed is a process for obtaining a minimum concentration of 20 x 10-6 kg/L of iso-alpha-acids in a liquid composition, said process being characterized by mixing in water: a natural source of á-acids and at least one metal oxide, wherein a natural source of á-acids means a non-extracted source of alpha -acids. Also disclosed is a process for preparing a fermented beverage comprising the following steps producing a mash, filtering said mash and recovering the wort, boiling said wort, fermenting said wort to produce a fermented beverage, characterized in that, a liquid composition comprising iso-alpha-acids is added to said wort or to said fermented beverage and in that said liquid composition is prepared in situ prior to its addition to the wort or fermented beverage by mixing in water at least one metal oxide with a natural source of alpha-acids, wherein a natural source of alpha-acids means a non-extracted source of alpha-acids.