weeple2000
Well-Known Member
I am on my third BIAB batch. I am trying to fine tune my system, and improve my efficiency. I would like someone to confirm if I am calculating this properly. I brewed the following recipe:
Coffee Bender Clone
9.5 Lbs Maris O. (added an additional 1 lb to compensate for lower efficiency predicted by past brews)
2.0 Lbs Aromatic
.75 Special Roast
.75 Crystal 55
.25 Chocolate Malt
.75 Flaked Outs
Wyeast - British Ale
.5 Oz Willamette Pellet Hop 4.7AA Mash Hop
.5 Oz Columbus Pellet Hop 15 AA (Bittering) 60 M
.5 Oz Willamette Pellet Hop 4.7 AA (flameout) 0 M
2 Oz Willamette Pellet Hop 4.77 AA Dry Hop 5 days in primary at end of evident fermentation
10 Oz of Indonesian Sulawesi fresh ground, cold steep. <= I plan on racking the beer off my sediment back to my primary and adding this after fermentation is complete
I used the calculator here to determine how much water to add and my strike temperature. I did not reserve boiling water for mashout, instead, I direct fired my kettle.
http://www.simplebiabcalculator.com/
8.38 gallons of water to mash
6.63 gallons of water preboil
5.63 gallons post boil
5.5 gallons transferred
I took a pre-boil and post-boil gravity reading.
Post boil it was 1.055 at 79 degrees F
Pre-boil it was 1.052 at 74 degrees F
I am trying to figure out if I am calculating efficiency correctly. Using my post boil gravity and correcting for temperature, with this calculator:
http://www.brewersfriend.com/hydrometer-temp/
i get 1.056.
I squeezed quite a bit of wort out of the bag. I mashed out, first raising the temperature to 170, then waiting 10 minutes, and removing the bag.
Due to the amount sqeezing, or maybe partially underestimating the boil off (not sure which), I believe I transferred about 5.75 gallons to my primary. I estimated losing .5 to trub, so I think I'm pretty close here.
When I milled my grain, I was able to set the gap on the mill. I set it to .030. I only ran the grain through the mill once.
I am trying to determine my efficiency, so I use the calculator here:
http://www.brewersfriend.com/brewhouse-efficiency/
with the ingredients above, and my post boil reading (for example) of 1.056 and 5.75 gallons (estimated), and my efficiency is 63.23%.
Am I calculating this correctly?
Up until this recent brew, I was unable to know what the gap on the mill was. But this time I went to a different LHBS to mill my grain, and I was able to know what the gap was set at.
I did add an additional 1 lb of base malt to the recipe (it called for 8.5, but I used the 9.5 listed above) to compensate for a lower efficiency.
I am trying to fine tune my system, and any suggestions would be appreciated. My efficiency just seems to be off in comparison to what I have read.
Coffee Bender Clone
9.5 Lbs Maris O. (added an additional 1 lb to compensate for lower efficiency predicted by past brews)
2.0 Lbs Aromatic
.75 Special Roast
.75 Crystal 55
.25 Chocolate Malt
.75 Flaked Outs
Wyeast - British Ale
.5 Oz Willamette Pellet Hop 4.7AA Mash Hop
.5 Oz Columbus Pellet Hop 15 AA (Bittering) 60 M
.5 Oz Willamette Pellet Hop 4.7 AA (flameout) 0 M
2 Oz Willamette Pellet Hop 4.77 AA Dry Hop 5 days in primary at end of evident fermentation
10 Oz of Indonesian Sulawesi fresh ground, cold steep. <= I plan on racking the beer off my sediment back to my primary and adding this after fermentation is complete
I used the calculator here to determine how much water to add and my strike temperature. I did not reserve boiling water for mashout, instead, I direct fired my kettle.
http://www.simplebiabcalculator.com/
8.38 gallons of water to mash
6.63 gallons of water preboil
5.63 gallons post boil
5.5 gallons transferred
I took a pre-boil and post-boil gravity reading.
Post boil it was 1.055 at 79 degrees F
Pre-boil it was 1.052 at 74 degrees F
I am trying to figure out if I am calculating efficiency correctly. Using my post boil gravity and correcting for temperature, with this calculator:
http://www.brewersfriend.com/hydrometer-temp/
i get 1.056.
I squeezed quite a bit of wort out of the bag. I mashed out, first raising the temperature to 170, then waiting 10 minutes, and removing the bag.
Due to the amount sqeezing, or maybe partially underestimating the boil off (not sure which), I believe I transferred about 5.75 gallons to my primary. I estimated losing .5 to trub, so I think I'm pretty close here.
When I milled my grain, I was able to set the gap on the mill. I set it to .030. I only ran the grain through the mill once.
I am trying to determine my efficiency, so I use the calculator here:
http://www.brewersfriend.com/brewhouse-efficiency/
with the ingredients above, and my post boil reading (for example) of 1.056 and 5.75 gallons (estimated), and my efficiency is 63.23%.
Am I calculating this correctly?
Up until this recent brew, I was unable to know what the gap on the mill was. But this time I went to a different LHBS to mill my grain, and I was able to know what the gap was set at.
I did add an additional 1 lb of base malt to the recipe (it called for 8.5, but I used the 9.5 listed above) to compensate for a lower efficiency.
I am trying to fine tune my system, and any suggestions would be appreciated. My efficiency just seems to be off in comparison to what I have read.