Sluggo
Well-Known Member
Here's another noob efficiency question, but kind of in reverse. My first AG foray was a pale ale and I nailed all the numbers from Beersmith dead on with respect to mashing, volumes, and gravities. I just made my second AG batch today...a Guinness clone. Here's my grain bill and expected OG using 75% efficiency (same as my first batch) from Beersmith:
Amount Item % or IBU
8.0 oz Rice Hulls (0.0 SRM) 5.44 %
6 lbs Pale Malt, Maris Otter (3.0 SRM) 65.32 %
1 lbs 8.0 oz Barley, Flaked (1.7 SRM) 16.33 %
12.0 oz Roasted Barley (500.0 SRM) 8.16 %
4.0 oz British Crystal Malt - 55L (55.0 SRM) 2.72 %
3.0 oz Acid Malt (3.0 SRM) 2.02 %
9.2 lbs. TOTAL
Est Original Gravity: 1.046 SG
Est Final Gravity: 1.013 SG
Estimated Alcohol by Vol: 4.36 %
Bitterness: 39.7 IBU
Est Color: 30.6 SRM
The grain was mashed with 3 gallons of water at 150°F for 90 minutes (seemed like a long time, but that's what the recipe called for). Then I batch sparged twice with 2.5 gallons each of 168°F water. Total wort collected was just over 6.5 gallons. This was then boiled for 90 minutes.
I ended up with 5 gallons of wort with an OG of 1.057...11 points higher than expected. Going back into Beersmith and messing around with variables the only thing my noob self could find that would have caused it would have been an efficiency of 90%. Is this even possible? Could it have been the long mash time? I lautered very slowly, about 2-2.5 hours total drain time between then three. Could this have caused the high OG?
I ended up adding half a gallon of water to 4.5 gallons of this wort to end up with 1.048...not quite what I was aiming for , but much closer. I just want to know what borked my OG so I can compensate for it next time.
Amount Item % or IBU
8.0 oz Rice Hulls (0.0 SRM) 5.44 %
6 lbs Pale Malt, Maris Otter (3.0 SRM) 65.32 %
1 lbs 8.0 oz Barley, Flaked (1.7 SRM) 16.33 %
12.0 oz Roasted Barley (500.0 SRM) 8.16 %
4.0 oz British Crystal Malt - 55L (55.0 SRM) 2.72 %
3.0 oz Acid Malt (3.0 SRM) 2.02 %
9.2 lbs. TOTAL
Est Original Gravity: 1.046 SG
Est Final Gravity: 1.013 SG
Estimated Alcohol by Vol: 4.36 %
Bitterness: 39.7 IBU
Est Color: 30.6 SRM
The grain was mashed with 3 gallons of water at 150°F for 90 minutes (seemed like a long time, but that's what the recipe called for). Then I batch sparged twice with 2.5 gallons each of 168°F water. Total wort collected was just over 6.5 gallons. This was then boiled for 90 minutes.
I ended up with 5 gallons of wort with an OG of 1.057...11 points higher than expected. Going back into Beersmith and messing around with variables the only thing my noob self could find that would have caused it would have been an efficiency of 90%. Is this even possible? Could it have been the long mash time? I lautered very slowly, about 2-2.5 hours total drain time between then three. Could this have caused the high OG?
I ended up adding half a gallon of water to 4.5 gallons of this wort to end up with 1.048...not quite what I was aiming for , but much closer. I just want to know what borked my OG so I can compensate for it next time.