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AHA Guideline

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Imperial or Double Red Ale

Imperial or Double Red Ales are deep amber to dark copper/reddish brown. May exhibit a small amount of chill haze at cold temperatures. Fruity-ester aroma is medium. Hop aroma is intense, arising from any variety of hops. Medium to high caramel malt character is present. Hop flavor is intense, but balanced with other beer characters. They may use any variety of hops. Hop bitterness is intense. Alcohol content is very high and of notable character. Complex alcohol flavors may be evident. Fruity ester flavors are medium. Diacetyl should not be perceived. Body is full.


  • Original Gravity (°Plato) 1.080 - 1.100 (19.3 - 23.7)
  • Apparent Extract/Final Gravity (°Plato) 1.020 - 1.028 (5.1 - 7.1)
  • Alcohol by Weight (Volume) 6.30% - 8.40% (8.00% - 10.60%)
  • Bitterness (IBU) (55 - 85)
  • Color SRM (EBC) 10 - 17 (20 - 34)