Here's my attempt at hitting the numbers and using the ingredients given by Sierra Nevada. Honestly, I don't see the point of partial mash. If you are going to go through the time and effort to mash, why not mash it all. With BIAB, all you need a full boil pot. I'd rather do half batches than partial mash. But enough of that and on to the numbers...
http://www.sierranevada.com/beers/porter.html
Sierra Nevada Porter PM
Robust Porter
Type: Partial Mash Date: 10/4/2011
Batch Size (fermenter): 5.00 gal Brewer:
Boil Size: 4.27 gal Asst Brewer:
Boil Time: 60 min
Equipment: Pot and Cooler ( 5 Gal/19 L) - Extract/Partial Mash
End of Boil Volume 3.90 gal
Brewhouse Efficiency: 72.00 %
Final Bottling Volume: 4.60 gal
Est Mash Efficiency 101.0 %
Fermentation: Ale, Single Stage
Taste Rating(out of 50): 30.0
Taste Notes:
Ingredients
Ingredients
Amt Name Type # %/IBU
5 lbs Pale Liquid Extract (8.0 SRM) Extract 4 52.6 % (or 7 lbs of Pale 2-row)
3 lbs Munich Malt - 20L (20.0 SRM) Grain 1 31.6 %
1 lbs Chocolate Malt (350.0 SRM) Grain 2 10.5 %
8.0 oz Caramel/Crystal Malt - 60L (60.0 SRM) Grain 3 5.3 %
1.50 oz Goldings, B.C. [5.00 %] - Boil 60.0 min Hop 5 18.2 IBUs
1.00 oz Willamette [5.50 %] - Boil 30.0 min Hop 6 10.2 IBUs
0.50 oz Willamette [5.50 %] - Boil 10.0 min Hop 7 2.4 IBUs
1.0 pkg American Ale (Wyeast Labs #1056) [124.21 ml] Yeast 8 -
Beer Profile
Est Original Gravity: 1.057 SG Measured Original Gravity: 1.046 SG
Est Final Gravity: 1.014 SG Measured Final Gravity: 1.010 SG
Estimated Alcohol by Vol: 5.7 % Actual Alcohol by Vol: 4.7 %
Bitterness: 30.8 IBUs Calories: 151.6 kcal/12oz
Est Color: 29.4 SRM