Which of the following glasses would be most appropriate for serving an Imperial Stout with 11% ABV?

The most appropriate glass for serving an Imperial Stout with an 11% ABV is a 6 oz snifter. This type of glass is specifically designed to enhance the experience of rich, heavy, and complex beers like Imperial Stouts. Snifters have a wide bowl that allows the drinker to fully appreciate the aroma by funneling the scents toward the nose. The smaller serving size (6 oz) is also ideal for higher ABV beers, as it encourages sipping and savoring rather than consuming quickly, which matches the typical experience of enjoying a robust stout.

In contrast, the other glass types are less suitable. The 12 oz Pilsner glass is more suited for lighter, crisper beers, as its shape promotes carbonation and is designed to showcase clarity and brightness, which are aspects not typical of an Imperial Stout. The 16 oz standard pint and the 20 oz imperial pint glasses are too large for the rich and intense character of an Imperial Stout, potentially leading to excessive consumption and a diminished appreciation of the beer's complexity. These styles are typically reserved for sessionable beers rather than those enjoyed in smaller quantities for their depth of flavor.