Abstract: The invention relates to a method of preparing a wort from cereals, comprising the steps of: providing a grist comprising non-malted cereals; preparing a mixture by contacting the grist with water and with an alpha-amylase, a protease and a filtration aid enzyme, to yield a mash after incubation; incubating said mixture at 45-55° C. for a period of 10-30 minutes, at 60-70° C. for a period of 20-40 minutes and at 80-90° C. for a period of 5-15 minutes; filtering the mash to obtain a liquid wort; and collecting the wort.