Have you ever drank Imperial Russian stout? You really should try it, it's like standard stout but on steroids. This is a particularly good one from Norwegian brewers Nøgne Ø.
The Imperial Stout style started off in the 18th Century when the then Thrale's brewery in London exported it to the court of Catherine II of Russia. It's always high in alcohol normally above 8 or 9% to cope with the long journey to reach Russian nobility.
This one oozes out of the bottle like a thick black alcoholic tar. It's sweet, soft, dry and rich with flavours of dark smoky roasts. God it's good! It's extremely silky, velvety and complex. What a nice surprise, I found this hiding at the back of the fridge behind a bottle of champagne that we never drink.
I think I got my bottle from Biercell in Altrincham but I'd imagine they also have it at Beermoth in Manchester.