Petrus Nitro Quad from Brouwerij de Brabandere is a dark, sophisticated quadrupel that defies the style's reputation for heaviness. Brewed with five different roasted malts, it delivers aromas of roasted grain and coffee, with subtle cherry notes threading through. At 11.5% ABV, this beer could be imposing, yet the addition of nitrogen instead of carbonation keeps it surprisingly approachable.

The nitrogen creates a distinctive velvety, creamy head and a refined mouthfeel, reshaping how the beer sits on the palate. This unconventional carbonation method makes the high alcohol content feel seamless and integrated. A beer that demonstrates how technical innovation can enhance rather than overshadow traditional brewing character.