Took SWMBO to Estes Park, CO for vacation and at the Estes Park Brewery they had a seasonal Pumpkin Ale on Tap; SWMBO loved it so I decided to brew one. I peeled, cubed and roasted 3.5# of pumpking and then mashed it with a big spoon and dumped it into the mash tun. I put in 1/2 my grain bill, followed by the roasted/mashed pumpkin, followed by the remaining grain bill. My question is concerning how much fermentables are contributed by the pumpkin; based on previous efficiencies with a similar grain bill I only got about 3 points. Doesn't that seem low?