Vulcaan Quadrant is a craft-brewed quadrupel from Vlaardingse Bierbrouwerij in Vlaardingen, Netherlands. This robust beer at 10.5% ABV was originally created as a seasonal holiday special, but has since earned a permanent place in the brewery's lineup. Dark and richly coloured, it offers chocolate-forward aromatics.

The brewery was founded in 2011 by four friends dedicated to reviving Vlaardingen's historic brewing tradition. Vulcaan Quadrant appeals to those seeking authentic, naturally brewed beers with genuine depth and character.