jacketsdb23
Member
Hello i started a thread in beginner group and didn't get much help - so I'll try here in a slightly different manner to see if I can get some different eyes on it.
I have a porter recipe and I'm trying to calculate my IBU. The recipe says the IBU is 33.5. My calcs say about 22 and I can't figure out what I'm doing wrong.
My technique:
IBU = AAU*U*75/V
Porter recipe = 1 oz 6% AA (6 AAU) Boiled for 60 minutes
1 oz 6% AA (6 AAU) Boiled for 1 minute
The original gravity (OG) standardized value is 1.054
I estimated a U of .221 for the 60 minute hop boil
I estimated a U of .008 for the 1 minute hop boil
Total IBU = 21.6? I have a "U" chart in John Porters book.
What I haven't figured in is the 7lbs lightweight extract and the 4oz of maltodextrin. How does this figure into a IBU count? I also did a full boil, starting with 6 gallons.
Thanks for any help.
Marcel
I have a porter recipe and I'm trying to calculate my IBU. The recipe says the IBU is 33.5. My calcs say about 22 and I can't figure out what I'm doing wrong.
My technique:
IBU = AAU*U*75/V
Porter recipe = 1 oz 6% AA (6 AAU) Boiled for 60 minutes
1 oz 6% AA (6 AAU) Boiled for 1 minute
The original gravity (OG) standardized value is 1.054
I estimated a U of .221 for the 60 minute hop boil
I estimated a U of .008 for the 1 minute hop boil
Total IBU = 21.6? I have a "U" chart in John Porters book.
What I haven't figured in is the 7lbs lightweight extract and the 4oz of maltodextrin. How does this figure into a IBU count? I also did a full boil, starting with 6 gallons.
Thanks for any help.
Marcel