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Chapter 9
BREW LOG
Brew name:
Batch number:
Original Gravity (OG):
Brew date:
Final Gravity (FG):
Malt temperature:
In fermenter, amount (L):
Water strike temp:
Finished beer, amount (L):
Mash temperature:
Bottling date:
Calculate the alcohol content:
Formula: (OG-FG) / 7,5 = alc % ABV
( - ) / 7,5 =
Add 0,06% pr gram sugar pr litre beer used for carbonation + x 0,06 =
Total alcohol = % ABV
Example: (1055 - 1010) / 7,5 = 6,0
+ 5g * 0,06 = 0,3
Total alcohol = 6,3 % ABV
Calculate the required amount of mash water:
Model 30: (grain weight in kg x 2) + 5
( x 2 ) + 5 = L
Model 60, using malt basket: (grain weight in kg x 2,5) + 7
( x 2,5 ) + 7 = L
Model 60, using false bottom: (grain weight in kg x 2,3 ) + 5
( x 2,3 ) + 5 = L
Example: ( 7 kg x 2 ) + 5 = 19 litres of water, for mashing
Calculate the required amount of sparge water:
+ - = L
Formula: Preboil grain weight (kg) – mash water amount = Sparge water amount (litres)
The preboil amount is normally 30 litres (model 30) to achieve 25 litres in the fermenting vessel after boiling. Or 60 litres (model
60) to achieve 50 litres in the fermenting vessel after boiling.
Example: 30 + 7 - 19 = 18 litres of water, for sparging
My Notes:
