a certain portion of dextrins for the beer’s body. It sterilizes the wort so that the brewing yeasts won’t have any competition during fermentation, and it concentrates the wort by evaporating off some of its water. Boiling deepens the wort’s color by encouraging browning reactions, mainly between the sugar maltose and the amino acid proline. And it begins the process of clarifying the brew by coagulating large proteins and causing them to bind with tannins from the barley hulls, form large masses, and precipitate out of the solution. When boiling is finished, the wort is strained, then cooled and aerated