I'm still a bit confused by this recipe and I'm not sure we ever got down to the bottom of it... I have the same concerns as jloxton.
Here is the tread where I'm getting the initial recipe straight from Denny:
http://www.tastybrew.com/forum/thread/76127
Denny mentions the grain bill below to have an OG of
1.073 at
73% efficiency for 5 gallons post boil, however like others I calculate
1.083. I'm pretty confident I'll hit 73% efficiency - so what should I do? Should I go with an OG of 1.083 or scale sown the grain bill to try and hit 1.073? That's quite a large difference, and for my first time brewing this recipe I want to make it exactly as intended (right down to the WY1450)...
Recipe Specifics
----------------
Batch Size (GAL): 5.00 Wort Size (GAL): 5.00
Total Grain (LBS): 16.25
Anticipated OG: 1.073 Plato: 17.8
Anticipated SRM: 12.2
Anticipated IBU: 75.1
Brewhouse Efficiency: 73 %
Wort Boil Time: 70 Minutes
Grain/Extract/Sugar
% Amount Name Origin Potential SRM
-------------------
67.7 11.00 lbs. Pale Malt(2-row) America 1.036 2
18.5 3.00 lbs. Rye Malt America 1.030 4
7.7 1.25 lbs. Crystal 60L America 1.034 60
3.1 0.50 lbs. Cara-Pils Dextrine Malt 1.033 2
3.1 0.50 lbs. Wheat Malt America 1.038 2
To make things even more confusing the recipe at the beginning of this thread mentions
75% efficiency with an OG of
1.073 which is what Denny mentions as the OG for
73% (the HBT recipe also mentions
1.085 which is what I would calculate at 75%). In this thread Denny also mentions 1.073 as being "spot on".
Should I go with an OG of 1.083 @ 73% or scale sown the grain bill to try and hit 1.073?