You might have read my review of Rudy's Can't Fail Cafe. Along with many others, I think very highly of the Shakin' Jesse, a milkshake of Guiness, espresso and chocolate ice cream. On a similar note, Alaska Airlines magazine had a one page recipe for a stout float.
I had Guinness at home and I purchased some vanilla bean ice cream. We were having Guinness floats.
We'll they didn't turn out so well. The stout was too bitter along side the ice cream. Maybe that was why the recipe called for a particular stout - maybe it isn't so bitter like Guinness.
Heather suggested chocolate syrup - at least that way they were drinkable.
Try the Shakin' Jesse if you are ever in Emeryville. Issaquah Brewhouse has something similar that I have yet to try. I'm sure it will be better than the float I made tonight!