Guinness revolutionized both draft beer systems and how stouts are canned. The key? Nitrogen, and a modified ping pong ball.

Guinness is easily the most popular Irish stout on the market, but it doesn't exist in a vacuum. Here are five other stouts ...

Eat Your Guinness. As one of the most recognizable beer brands in the world, Guinness can be found flowing from taps at restaurants, hole-in-the-wall bars, and even upscale cocktail bars.

The newest Guinness stout (released in 2021) is a non-alcoholic version of its Draught stout. Served in nitro cans, Guinness 0.0 is a dupe of Draught; it looks and (almost) tastes like the real thing.

Many stouts, especially a beer like Guinness Draught Stout, can actually quite low in alcohol (Draught is 4.2% ABV, for instance) and lower than you might think in terms of caloric content.