I'm gonna be doing AG infusion mash on my next batch and i am wondering how should i adjust Mash/Sparge water ratio's to obtain expected OG of recipe but not have more than 5 gallons wort (or a bit more cause im using a glass blowoff tube) for primary fermentation in a 5 gallon glass carboy?
For example:
11 pounds grain =
2.75 gallons for mash (.25 gallon/lb. of grain)
+ 5.5 gallons for sparge (.5 gallon/lb. of grain)
= 8.25 gallons - .825 gallons (.1 per lb. of grain) for grain absorption = 7.42 gallons
7.42 gallons wort - 1 gallon boil off = 6.42 gallons ??? too much for 5 gallons
Are there any "Rule Of Thumb" Ratios i should use to obtain the correct amount after the boil?
Or should i use the ratio of (like in my examples) 6.42 gallons vs. 5 gallons???
example: 5 gallons is approx. 78% of 6.42 gallons (typical mash/sparge ratios for 11 lb. grain bill) so i can plug the 78% ratios back into the mash sparge amounts to have the correct end amount.
For example:
11 pounds grain =
2.75 gallons for mash (.25 gallon/lb. of grain)
+ 5.5 gallons for sparge (.5 gallon/lb. of grain)
= 8.25 gallons - .825 gallons (.1 per lb. of grain) for grain absorption = 7.42 gallons
7.42 gallons wort - 1 gallon boil off = 6.42 gallons ??? too much for 5 gallons
Are there any "Rule Of Thumb" Ratios i should use to obtain the correct amount after the boil?
Or should i use the ratio of (like in my examples) 6.42 gallons vs. 5 gallons???
example: 5 gallons is approx. 78% of 6.42 gallons (typical mash/sparge ratios for 11 lb. grain bill) so i can plug the 78% ratios back into the mash sparge amounts to have the correct end amount.