Petrus Nitro Cherry Chocolate Belgian Quad 330mlQuadrupels tend to be hard to digest, but the nitrogen keeps it light and drinkable, giving this unique brew its velvety, creamy head. Turn the bottle upside down and pour hard into the middle of the glass to activate the nitro. Petrus Nitro Cherry Chocolate Belgian Quad obtains its complex character thanks to the roasted malts and the cherries, but what makes it truly unique, is the technology Brewery De Brabandere brewers used to add nitrogen into