What is the degree of Milling for beer brewing in microbrewery?
- Apr 24, 2021
- 179
- tiantai
What are the requirements for the degree of Milling of malt and auxiliary materials in microbrewery brewing system? The degree of Milling is the degree of material Milling, specifically the relative proportion of coarse powder and fine powder after the malt or auxiliary materials are Milled for craft brewery. For malt, it also includes the proportion of the husk or the degree of broken husk. The degree of Milling can be distinguished by "good, bad" or "coarse and fine". According to the requirements of beer brewing in microbrewery, the degree of crushing is not the finer the better, but the appropriate thickness, which depends on the quality of the malt and the specific requirements of the Mashing process.
Malt can be crushed into 5 parts of wheat husk, coarse grain, fine grain, coarse flour and fine powder. Generally, it is required that the husk must be broken without being broken. The finer the endosperm of the malt, the better, coarse grain and fine grain (including fine powder) The ratio should be above 1:2.5. For the filter tank, the proportion of the wheat husk plus the remaining attached powder particles in the shell should be 35%-40%, not less than 30%. For the well-dissolved malt meal, it should be 40%-45%, fine powder It should be 15%~20%; for poorly dissolved malt meal, it should be 25%~30%, and fine powder should be 25%~30%. For factories using wort filters, they generally master 20%~25% wheat husk, 35%~40% coarse powder, and 30%~35% fine powder.
In order to improve the mashing leaching rate in beer brewery, the milling of auxiliary materials is generally finer, but not too fine, because too fine powder, especially in the case of poor mashing effect and incomplete mashing , is easy to form a sludge and block the filter path of wort filtration in Lauter Tun. Or enter the wort through the filter layer, so that there are more suspended particles in the wort and cause the beer starch to become turbid. If the enzyme activity of malt is high with micro brewing equipment, the degree of pulverization of auxiliary materials should be controlled at more than 70% of the fine powder (grain) passing through a 40-mesh sieve.
Alisa Lee
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