Doing this up tonight after work. I bought a 4lbs pie pumkin yesterday, diced it and roasted in the oven at 350F for 60 minutes. Came out with 1.4 lbs of nicely roasted pumkin to add to the mash. I'll be interested to see if its detectable... My pumkin spice is equal parts Cinnamon and Ginger, 1/4 part nutmeg.
Recipe: Pumkin Spiced Ale
Style: Spice, Herb, or Vegetable Beer
Batch Size (fermenter): 18.93 l
Boil Time: 60 Minutes
OG / FG / ABV / Ratio: 1.047 SG / 1.007 SG / 5.1 % / 0.292
Color / IBU: 14.0 SRM / 13.6 IBUs
Grains: Amt Name Type # %/IBU
1 lbs Rice Hulls (0.0 SRM) Adjunct 1 10.0 %
1.40 lb Pumkin Slices (Mash 60.0 mins) Flavor 2 -
8 lbs Pale Malt (2 Row) US (2.0 SRM) Grain 3 80.0 %
8.0 oz Caraaroma (130.0 SRM) Grain 4 5.0 %
1.5 oz Roasted Barley (300.0 SRM) Grain 6 0.9 %
1.5 oz Chocolate Malt (350.0 SRM) Grain 5 0.9 %
Boil: Amt Name Type # %/IBU
5.0 oz Brown Sugar, Light (8.0 SRM) Sugar 7 3.1 %
1.00 oz Crystal [3.50 %] - Boil 60.0 min Hop 8 13.6 IBUs
1.00 Items Whirlfloc Tablet (Boil 15.0 mins) Fining 9 -
1.00 tsp Pumkin Pie Spice (Boil 15.0 mins) Spice 10 -
Ferment: Amt Name Type # %/IBU
1.0 pkg Safale American (DCL/Fermentis #US-05) Yeast 11 -
Mash Schedule: Single Infusion, 150F Two Sparges