The main product of the guinness company is the Guinness Draught, a 4.2% ABV dry stout that is one of the most successful beer brands worldwide. Guinness was founded when Arthur Guinness bought a small brewery in Dublin in 1759. At first the brewery produced a variety of ales and beers, but in 1799 it was decided to concentrate exclusively on porter, a dark beer with a rich head.

Guinness Draught is indeed the flagship product of the Guinness company, renowned for its distinctive taste and creamy texture. It's brewed using a unique combination of malted barley, roasted barley, hops, and water, resulting in its iconic dark color and robust flavor profile. 

Arthur Guinness's decision to focus exclusively on porter proved to be a pivotal moment in the brewery's history, laying the foundation for the brand's enduring success. Over the years, Guinness Draught has become synonymous with Irish culture and is enjoyed by beer enthusiasts around the world.

In addition to Guinness Draught, the Guinness company produces a wide range of other beer varieties, including Guinness Foreign Extra Stout, Guinness Extra Stout, and Guinness Blonde American Lager. These beers cater to diverse tastes and preferences, ensuring that there's a Guinness brew for every occasion.