For those of you who are curious, I thought I'd review the peanut butter stout I brewed. It was brewed 8 weeks ago, kegged 10 days after that.
It has a nice head on it when poured but it recedes quickly and remains a thin head until the beer is gone. I would say that this is on par for most of my beers and I don't think that the peanut butter oil hurt my head retention that much.
The aroma is a peanut butter explosion which is exactly what I was looking for. Originally it had a hot alcohol type flavor, not sure where this came from because it is only 4.5 % ABV. That flavor is gone now.
The peanut butter is mostly in the after taste and it's not strong at all, just a hint of peanut butter. If I didn't know it was in there, I'm not sure I would pick it out on taste alone. I added some peanut butter extract, 5 drops per 12 oz, and this helped the peanut butter flavor. It now comes through in the main beer as well as the after taste.
I used Jamil's sweet stout recipe, I have never brewed this before and now I wish I would have done a split batch with the peanut butter only in half so I could compare.
Overall, it's a good drinkable beer, but I usually only have 1 pint. I'm not sure if I will brew this again, I may try it in a brown porter or nut brown instead.