Did the guys from from Oskar Blues Brewery go to the BBC College of beer making? The Ten Fidy Imperial Stout is unbelievable. Another Stout beer that tastes like a dream and it's 200% stronger than Guiness! That's right, Ten Fidy means 10.5% abv! Two cans of this and you will be unter dem Tisch! It has a rich, smooth taste with little or no of the bitter Guiness type after taste.