For Round 4 Aaron is brewing a Dusseldorf Altbier, Imperial Pepper Alt. His recipe is below:
Batch Size: 5.50 gal Starting Gravity: 1.083 SG Final Gravity: 1.021 SG Mash Profile: Double Infusion,Medium Body Hops Used Amount Item Type % or IBU 2.00 oz Tradition [6.00 %] (60 min) Hops 45.5 IBU 0.50 oz Hallertauer Hersbrucker [4.00 %] (30 min) Hops 3.9 IBU 0.50 oz Hallertauer Hersbrucker [4.00 %] (15 min) Hops 2.0 IBU 1.50 oz Hallertauer Hersbrucker [4.00 %] (5 min) Hops 3.8 IBU Grains Used Amount Item Type % or IBU 1.00 lb Rice Hulls (0.0 SRM) Adjunct 5.65 % 12.00 lb Munich Malt (9.0 SRM) Grain 67.80 % 3.00 lb Oats, Flaked (1.0 SRM) Grain 16.95 % 0.75 lb Caraamber (30.0 SRM) Grain 4.24 % 0.75 lb Rye, Flaked (2.0 SRM) Grain 4.24 % 0.20 lb Carafa I (337.0 SRM) Grain 1.13 % Other Ingredients Used Amount Item Type % or IBU 2.00 tsp Black Pepper (Boil 5.0 min) Misc Yeast Used 2 Pkgs German Ale (Wyeast Labs #1007) Yeast-Ale