North American Origin Ale Styles

Imperial Red Ale

Ale · Deep amber to dark copper/reddish-brown

What to expect

Medium to high caramel malt character is present in aroma and flavor

Reading guide · The complete guideline attributes below preserve the source’s qualifications.

Color · SRM

10–17

Pale / strawBlack

Deep amber to dark copper/reddish-brown · Illustrative colors on the shared, uneven SRM scale.

Explore styles overlapping this color range

Alcohol · ABV

8.0–10.6%

Reference scale, not a limit on official guideline values.

Bitterness · IBU

55–85

Measured bitterness; perceived bitterness is described in the guideline below.

Brewers Association 2026 · Printed guideline page 14 · PDF page 23. Color graphics are illustrative.

The guideline, in detail

Official style attributes, including what may be present and what should be absent.

Malt aroma & flavor

Medium to high caramel malt character is present in aroma and flavor

Hop aroma & flavor

High, derived from any variety of hops. Hop flavor is prominent and balanced with other beer attributes.

Perceived bitterness

Very high

Body & mouthfeel

Full

Clarity

Chill haze is acceptable at low temperatures

Color

Deep amber to dark copper/reddish-brown

Fermentation characteristics

Very high alcohol is a hallmark of this style. Complex alcohol flavors may be present. Fruity esters are medium. Diacetyl should not be present.

Technical specifications, including gravity

Original Gravity (°Plato) 1.080-1.100 (19.3-23.7 °Plato) • Apparent Extract/Final Gravity (°Plato) 1.020-1.028 (5.1-7.1 °Plato) • Alcohol by Weight (Volume) 6.3%-8.4% (8.0%-10.6%) • Hop Bitterness (IBU) 55-85 • Color SRM (EBC) 10-17 (20-34 EBC)

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