catalyst156
Member
I put together a partial mash recipe based on Jamil's Lagunitas IPA clone (AG) found here: http://beerdujour.com/Recipes/Jamil/JamilsLagunitasIPA.htm
After mashing the grains and topping off the kettle, I stirred the wort to get a good distribution and took a sample for a gravity reading. Pre-Boil Gravity: 1.025 from a volume of approximately 3 gal. The rest of the fermentable sugar came from 6 lbs LME to reach an estimated OG of 1.061 I finished the brew and before pitching the yeast (again, lots of shaking to aerate and homogenize the wort) I took another sample. This time it read 1.051 which is 0.010 lower than expected. Now, I have three questions.
1) Based on the information I can find, it looks like you should expect approximately 37 points ppg from 1 lb of LME (I know it will vary, but that's a good rough estimate). Therefore, I'm estimating that I should have got a reading of 1.060. (Pre-Boil OG * partial boil gravity/batch size + LME addition == 1.025 * 0.6 + 45 == 1.060). Either I mismeasured the top-off water (which I know I did not because my carboy is marked at the 5 gal mark) or the LME was really weak (~30 ppg). Is that suspect?
2) It's only been in the fermenter for a few hours, would a DME addition hurt anything at this point?
3) I was planning on dry-hopping with another 4 oz of Willamette (4.7% AA), but if it's going to be weaker than expected (more of a session IPA I guess), should I forgo the dry-hop? I don't want a 2xIPA. I guess the logical thing to do would be to taste it at the 2 wk mark and see how much of the hop aroma has been retained and make a decision at that point. Yes?
Thanks for the help!
After mashing the grains and topping off the kettle, I stirred the wort to get a good distribution and took a sample for a gravity reading. Pre-Boil Gravity: 1.025 from a volume of approximately 3 gal. The rest of the fermentable sugar came from 6 lbs LME to reach an estimated OG of 1.061 I finished the brew and before pitching the yeast (again, lots of shaking to aerate and homogenize the wort) I took another sample. This time it read 1.051 which is 0.010 lower than expected. Now, I have three questions.
1) Based on the information I can find, it looks like you should expect approximately 37 points ppg from 1 lb of LME (I know it will vary, but that's a good rough estimate). Therefore, I'm estimating that I should have got a reading of 1.060. (Pre-Boil OG * partial boil gravity/batch size + LME addition == 1.025 * 0.6 + 45 == 1.060). Either I mismeasured the top-off water (which I know I did not because my carboy is marked at the 5 gal mark) or the LME was really weak (~30 ppg). Is that suspect?
2) It's only been in the fermenter for a few hours, would a DME addition hurt anything at this point?
3) I was planning on dry-hopping with another 4 oz of Willamette (4.7% AA), but if it's going to be weaker than expected (more of a session IPA I guess), should I forgo the dry-hop? I don't want a 2xIPA. I guess the logical thing to do would be to taste it at the 2 wk mark and see how much of the hop aroma has been retained and make a decision at that point. Yes?
Thanks for the help!