Imperial | Definition

Doc's Brewing Glossary by Adam McKee

Imperial, or Double, is a beer style designation indicating a higher alcohol content and often a more intense flavor profile compared to the standard version of the beer style.

Understanding Imperial Beers

Imperial beers, sometimes referred to as “Double” beers, are a category of beers known for their higher alcohol by volume (ABV) and often a more pronounced intensity in flavor, aroma, and body compared to their standard counterparts. The term “Imperial” originated in the 18th century when stronger beers were brewed for export to the Russian Imperial Court. Today, the term has become synonymous with robust and flavorful beers across various styles.

Characteristics of Imperial Beers

  • Higher Alcohol Content: Imperial beers typically have an ABV ranging from 7% to 14%, significantly higher than standard versions of the same style. This increased alcohol content is achieved by using more fermentable sugars in the brewing process, often through a larger grain bill or the addition of adjuncts.

  • Intensified Flavors: In addition to higher alcohol, Imperial beers often boast a more intense flavor profile. This can be achieved through increased hopping rates for bolder bitterness and aroma, greater malt complexity for richer and sweeter flavors, or the use of additional ingredients like spices, fruits, or barrel aging for unique character.

  • Fuller Body: The higher alcohol and increased malt content often result in a fuller, more robust body and mouthfeel compared to standard beers. This can create a more satisfying and lingering drinking experience.

Popular Imperial Beer Styles

  • Imperial IPA: Characterized by intense hop bitterness, aroma, and flavor, with a high ABV and often a resinous or tropical fruit character.

  • Imperial Stout: A dark and complex beer with roasted malt flavors, high ABV, and often additional ingredients like coffee, chocolate, or vanilla.

  • Imperial Porter: Similar to Imperial Stout but with a less intense roasted character and more balanced malt profile.

  • Imperial Pilsner: A stronger version of Pilsner with increased maltiness, higher ABV, and a more pronounced hop presence.

  • Imperial Brown Ale: A full-bodied brown ale with elevated alcohol content and intensified caramel, toffee, and chocolate notes.

  • Imperial Red Ale: A stronger and maltier red ale with a higher ABV and more pronounced caramel, toffee, and toasty flavors.

Brewing Imperial Beers

Brewing Imperial beers requires careful attention to recipe formulation, fermentation management, and ingredient selection. The increased fermentable sugars can lead to challenges in achieving complete fermentation, and the higher alcohol content can stress yeast strains. It is crucial to choose yeast strains with high alcohol tolerance and provide them with ample nutrients to ensure a healthy and successful fermentation.

Enjoying Imperial Beers

Imperial beers are often enjoyed as sipping beers due to their higher alcohol content and intense flavors. They are best savored slowly to appreciate the nuances of their complex flavor profiles. They also pair well with hearty foods, such as grilled meats, rich stews, and aged cheeses.

Conclusion

Imperial beers are a testament to the brewer’s creativity and the endless possibilities for experimentation in the world of beer. Their bold flavors, high alcohol content, and rich history make them a fascinating and rewarding category for both brewers and beer enthusiasts. Whether you’re seeking a hop bomb Imperial IPA, a decadent Imperial Stout, or a nuanced Imperial Pilsner, exploring the world of Imperial beers is sure to be a delightful journey.

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