Founders Barrel Aged CBS (Canadian Breakfast Stout) RATINGS: 1516 WEIGHTED AVG: 4.3/5 SEASONAL: Series EST. CALORIES: 348 ABV: 11.6%. COMMERCIAL DESCRIPTION. Imperial Stout brewed with Chocolate and Coffee, aged in Maple Syrup-Bourbon Barrels. CBS was born when we stumbled upon some bourbon barrels that had previously housed maple syrup. We opted to put the same base beer as KBS, an imperialized ...