I had a barleywine that was too sweet. I boiled some hops on the stove, filtered them through a coffee filter, and added the result to my finished beer. It helped a lot, and in fact that barleywine won a local competition later.
MetallHed said:
It appears that Hop Shot should be boiled to achieve bitterness (the oils in the resin still need isomerization). I would not add that to a finished beer - particularly a sweet stout.
Nor would I add bourbon. I generally dislike strong bourbon flavors in beer, but more to the point, I get a sweet note that I doubt would complement an already sweet brew.
I would brew a low OG, dry, bitter stout and blend 50/50. Shoot for 1.040-ish and 30-40 IBUs, with a healthy dose of roasted barley and high alpha bittering hops.
I had a barleywine that was too sweet. I boiled some hops on the stove, filtered them through a coffee filter, and added the result to my finished beer. It helped a lot, and in fact that barleywine won a local competition later.
I asked N Brewer about this and yes you need to boil it to achieve bitterness.
Something else I've been reading about is hop tea. A small amount of say 1/4 to 1/2 oz steeped in hot water and strained into the stout may take some of the sweetness out.