Imo and based on stuff i have read, pumpkin has a very slight flavor. Haha dont want to say delicate for pumpkin, but yeah. For a porter, or coffee pumpkin, i think the pumpkin pie spices are more the associated flavors and i would be tempted to not even add pumpkin. Or would add it just to say i did. Brulosophy, i think it, was did a triangle test that hinted that the p spiced beer with or without pumpkin tasted the same. Just some food for thought i guess. I make mine so i can drink it all day and not get sick of it. Very lightly spiced.