(1)Gelatinizing tank,mash tank, filter tank and boiling tank all adopt closed round manhole. The manhole door must be closed in the production process to reduce the oxygen dissolution in the process of process operation as much as possible. (2)The inlet pipe of the mash and wort should be located at the bottom of the tank to reduce the contact between the mash and wort and oxygen during transportation. (3)The mash mixing times should be reduced and the mixing time should be shortened to avoid the mash forming vorticity and inhaling a large amount of air.

1.The raw material formula is light malt 60%, dark scorched malt 15%, black malt 5%, black rice 20%, hop 0.08%-0.10%. 2.Brewing process: black rice treatment → black rice gelatinization → black rice mashing → wort boiling → fermentation → filtration → filling → sterilization → finished product

Formation and solution of beer chroma The color of beer comes from raw malt, and the color change rule in the whole beer production process is as follows:1.feeding and saccharification: chroma formation and rise, pigment material leaching;2.Wort filtration and washing grains: color reduction due to