mcduhamel
Member
I use the BIAB method. Typically I get around 65% efficiency. Yesterday, though, I brewed a batch and measured about 45%; got an OG of 1.050 when I was expecting 1.060. I'll lay out the recipe below. So, here's my question: my mash temp was a bit warmer than I wanted; it was about 154 degrees, for 90 minutes. Could that have contributed? The only other thing I can think of is that I took the gravity reading after aeration; usually I take it before.
So, here's the recipe:
Maris Otter: 10 lbs
Victory malt: 1 lb
Crystal 60: 1 lb
Northdown 7.2%: 90 min
UK Challenger 8.3%: 45 min
UK Challenger 8.3%: 10 min
Strike water was 7.3 gallons at 168. Mash was 90 minutes at 152 (actually around 154). No active sparge.
Boil was 90 minutes. I expected 5.25 gallon in the fermenter. I got 3.8. No idea why.
Thoughts?
So, here's the recipe:
Maris Otter: 10 lbs
Victory malt: 1 lb
Crystal 60: 1 lb
Northdown 7.2%: 90 min
UK Challenger 8.3%: 45 min
UK Challenger 8.3%: 10 min
Strike water was 7.3 gallons at 168. Mash was 90 minutes at 152 (actually around 154). No active sparge.
Boil was 90 minutes. I expected 5.25 gallon in the fermenter. I got 3.8. No idea why.
Thoughts?