The Sixth Glass

Quadrupel Boulevard Brewing Co.


The Sixth Glass, a Belgian-style Quadrupel by Boulevard Brewing Co.

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The Sixth Glass is a Belgian-style Quadrupel brewed by Boulevard Brewing Co., and for the purposes of this craft beer review, the ale was served in a snifter from a bottle.


The Quad pours a semi-translucent amber-brown and is topped by a thin head of white froth that bubbles down rapidly. The reduction doesn’t leave behind any lace or residue on the glass.


The aroma is faint but boozy with sweet, dark fruits and yeast.


The complex palate offers dark fruits of fig, prune, and date. They’re blended with Belgian yeast and a touch of mint. Balance is provided with a mild bite noble hops. Its finish is somewhat spicy with phenols of clove and pepper. They’re blended with a taste of booze and toasty bread.


This Quad has rich and smooth feel with a full body and less than moderate carbonation. Finishes dry and warmly.


The appearance for The Sixth Glass was disappointing, but one can live with that. Instead, this brew receives high marks for its decadent feel and subtle complexity in its approachable flavor. And although this brew is a ten percenter, it’s quite easy to tilt back. Boulevard has indeed brewed a superb Quad.

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About the Quadrupel

The Belgian Quadrupel or simply Quad is a name given to the strongest of the Trappist and Abbey ales. La Trappe pioneered the Quad while a nearly identical brew, the Abt, was crafted by Westvleteren and that beer would become St. Bernardus. Its color ranges from a garnet to brown and its aroma and palate are rich with sweet malt, fruity esters, and moderately spicy phenols. Its bitterness is typically mild at best and instead, the focus is on its malt character and strong alcohol. Comparatively, the Quadrupel is stronger and more intensely flavored than the Dubbel and Tripel.