opalko
Well-Known Member
Ok, this is my 2nd BIAB after brewing on a 3V system for a number of years. On my "old" set up with an "EasyMasher" (or homemade clone) I would normally get 75% efficiency - easily. My first BIAB I calculated the OG at around 1038 and ended up 1028-1030. This time I increased the grain bill and had an expected OG of 1050 (at 75% eff) and ended with a gravity of 1039 - 59% efficiency?!
The recipe
7 lb American 2 row malt
1 lb Crystal 40L
1 lb Amber malt
4 oz Corn sugar
.8 oz Goldings hops (5% AAU) - 60 minutes
.8 oz Fuggles (4% AAU) - 30 minutes
Wyeast #1469.
Grain crush same as I always use which is not a fine crush. Mash in at 151 F, 7.25 gallons, mash for 90 minutes, checking temp every 20 minutes. Temp averaged around 148 F. Added heat in small bursts occasionally if I saw temp dip to 146-7. Mash out at 151 F by pulling bag out and letting drip, squeezing what liquid I could get out of it by hand - (should I be running it up to 170 F first?)
90 minute boil, first 30 no hops. Ended up with 5.75 gallons wort. I don't really mind the gravity being lower - I prefer lower gravity brews but I'm not really sure why there is such a big difference in the gravity doing it by BIAB vs. 3V (I've brewed this one before).
Ideas?
Cheers!
Opalko
The recipe
7 lb American 2 row malt
1 lb Crystal 40L
1 lb Amber malt
4 oz Corn sugar
.8 oz Goldings hops (5% AAU) - 60 minutes
.8 oz Fuggles (4% AAU) - 30 minutes
Wyeast #1469.
Grain crush same as I always use which is not a fine crush. Mash in at 151 F, 7.25 gallons, mash for 90 minutes, checking temp every 20 minutes. Temp averaged around 148 F. Added heat in small bursts occasionally if I saw temp dip to 146-7. Mash out at 151 F by pulling bag out and letting drip, squeezing what liquid I could get out of it by hand - (should I be running it up to 170 F first?)
90 minute boil, first 30 no hops. Ended up with 5.75 gallons wort. I don't really mind the gravity being lower - I prefer lower gravity brews but I'm not really sure why there is such a big difference in the gravity doing it by BIAB vs. 3V (I've brewed this one before).
Ideas?
Cheers!
Opalko