Guinness is not considered an imperial stout. While it is a stout beer, it falls into the category of Irish Dry Stout rather than an imperial stout. Irish Dry Stout is a subcategory of stouts that originated in Ireland, and Guinness is one of the most well-known examples of this style.
The main difference between an imperial stout and an Irish Dry Stout like Guinness lies in their alcohol content and overall flavor profile. Imperial stouts are typically much higher in alcohol, often reaching double-digit ABV (alcohol by volume) percentages. They are known for their robust and intense flavors, with a strong emphasis on maltiness and sweetness.
On the other hand, Guinness is known for its relatively low alcohol content, usually around 4-4.5% ABV. It has a distinct flavor profile that is characterized by its dryness, roasted malt flavors, and hints of coffee and chocolate. Guinness also has a smooth and creamy texture, thanks to the use of nitrogen gas during the pouring process.
I have personally enjoyed many pints of Guinness over the years, both on its own and paired with traditional Irish dishes like beef stew or shepherd's pie. Its unique flavor and creamy mouthfeel make it a satisfying and refreshing beer to drink.
That being said, if you are specifically looking for a stronger and more robust stout with higher alcohol content, you may want to explore other options within the imperial stout category. There are many craft breweries that produce exceptional imperial stouts with a wide range of flavors and complexities. Some popular examples include Founders KBS, Evil Twin Even More Jesus, and Old Rasputin Russian Imperial Stout.
While Guinness is a beloved and iconic stout beer, it does not fall into the category of an imperial stout. It is instead classified as an Irish Dry Stout, known for its dryness, roasted flavors, and moderate alcohol content.