Hi. guys. I posted a question on a particular recipe in the Recipe Database, but I don't know how long it will be until the author of that recipe sees it, and I want to get started with my brew sometime soon.
So I figured I would ask you guys. The recipe is as follows:
Recipe Type: Extract
Yeast: Safale - 05
Yeast Starter: No
Additional Yeast or Yeast Starter: No
Batch Size (Gallons): 5
Original Gravity: 1.067
Final Gravity: 1.016
Boiling Time (Minutes): 60
Primary Fermentation (# of Days & Temp): 7 days at 60 deg
Secondary Fermentation (# of Days & Temp): 3 weeks at 60 deg
7lbs Muntons Extra Light DME
1/2lb Crystal 40
Steeped in 1.5 gallons of 160 deg water for 20 minutes.
1.5 oz Amarillo 8%AA for 60 Min
1 oz Amarillo 8%AA for for 15 Min
1 oz Amarillo 8%AA for for 5 Min
.5 oz Amarillo 8%AA for at flameout
Now, I used the basic AAUxUx75/rVolume equation to calcuate the IBU. When I do a 2 gallon boil volume, the IBU doesn't even come close to 45. But when I do 5 gallons, it comes close. So is it safe for me to assume that he meant for the brewer to do a full 5 gallon boil, even though it isn' t specified in the recipe? If so, can I just do a 2 or 3 gallon boil and use more hops?