Use 100% pumpkin in a can, not pumpkin pie mix. Spread it out on a cookie sheet and bake for an hour at 350 and get the top nice and caramelized. Then add it to your boil. I just bottled a pumpkin ale (based on Thunderstruck pumpkin ale which you can find on here) and the pumpkin flavor was great. I used 60 oz. of pumpkin in a 5 gallon batch.
Make it so!
Secondary: Doppelbock, DIPA
Barrel Aging: Flanders Red
Bottled: Ginger Mead, Scottish 80-/
Kegged: Belgian Golden Strong