bcull
Apprentice
This past weekend I brewed my second 5 gal batch of beer using the BIAB method. I added a recirculating pump which took the water from the bottom of the pot back to the top of the grain bag I did a batch sparge/rinse at the end of the mash.
The Method:
Step 1 - dough in with 14 qts of water to 7 pounds of grain - 125 deg/10 min
Step 2 - raise temp to 156 deg/40 min
Step 3 - raise temp to 168/15 min
Step 4 - rinse bag of grains in secondary pot with remainder of water (about 3 gal) 172 deg/45 min
When I measured the SG after the boil (which included 12 oz of Lyle's syrup) - I calculated (using BeerSmith 2) a mash efficiency of 98.6%!
I double checked all measurements because I didn't believe the results. The problem is that rather than have a Special Bitter, I now have an Extra Special Bitter, and the IBU's fall lower than I wanted. I need to know whether it is reasonable to change the brewhouse efficiency for future recipes so that I stay in the range of what I am intending to brew.
Suggestions?
The Method:
Step 1 - dough in with 14 qts of water to 7 pounds of grain - 125 deg/10 min
Step 2 - raise temp to 156 deg/40 min
Step 3 - raise temp to 168/15 min
Step 4 - rinse bag of grains in secondary pot with remainder of water (about 3 gal) 172 deg/45 min
When I measured the SG after the boil (which included 12 oz of Lyle's syrup) - I calculated (using BeerSmith 2) a mash efficiency of 98.6%!
I double checked all measurements because I didn't believe the results. The problem is that rather than have a Special Bitter, I now have an Extra Special Bitter, and the IBU's fall lower than I wanted. I need to know whether it is reasonable to change the brewhouse efficiency for future recipes so that I stay in the range of what I am intending to brew.
Suggestions?