After mashing, when the starch has been broken down, the next step is to separate the liquid extract (the wort) from the residual undissolved solid materials found in the mash. Wort separation is important because the solids contain large amounts of protein, poorly modified starch, fatty material, s

Bitter taste is one of the characteristics that distinguishes beer from other beverages. Normal bitter taste generally disappear quickly, after drinking to give a person with refreshing feeling. In the process of beer production, if the technological conditions are not perfect, the quality of raw materials is defective, and the technological hygiene is poor, the bitter taste of beer will become rough, bitter and long after the bitter taste.

Brewer's yeast belongs to the yeast genus. In wort, through the external cell membrane, they will absorb dissolved sugars, simple nitrogen substances, vitamins, ions and other substances, and then they use these substances through metabolic pathway, for their own growth and fermentation, and produce rich beer flavor substances at the same time. Therefore, yeast is the main player of beer fermentation and the soul of beer brewing. The type and quality of yeast determine the type and flavor of beer.