Use one can of Libby's pumpkin (29 oz).
Use 1.8 tsp of pumpkin pie mix at flameout. I used 2 tsp total in practice.
http://www.brewunited.com/index.php?blogid=154
http://blog.brewingwithbriess.com/pumpkin-patch-porter/
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Added brewing salts a few minutes late, after first adding the grain and pumpkin. After stirring, temperature was 152 - 153 F.
Pumpkin was warmed in a pot up to about 153 F, until the bubbling became hard to handle.
OG: 1.064 - 1.066, under the target of 1.068.
Had to add a few cups of water after the boil to reach three gal.
With the yeast and extra liquid added, the resulting ABV is probably around 5.0 - 5.5.