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AHA Guideline

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American-Style Imperial Porter

American-Style Imperial Porters are black. Ale-like fruity ester aromas should be evident but not overpowering, complimenting malt and hop aromas. Hop aroma is low to medium-high. No roast barley or strong burnt/black malt character should be perceived. Medium malt, caramel and cocoa-like sweetness is present. Hop flavor is low to medium-high. Hop bitterness is medium-low to medium. Ale-like fruity ester flavors should be evident but not overpowering, complimenting hop character and malt derived sweetness. Diacetyl should be absent. Body is full.


  • Original Gravity (°Plato) 1.080 - 1.100 (19.3 - 23.7)
  • Apparent Extract/Final Gravity (°Plato) 1.020 - 1.030 (5.1 - 7.6)
  • Alcohol by Weight (Volume) 5.50% - 9.50% (7.00% - 12.00%)
  • Bitterness (IBU) (35 - 50)
  • Color SRM (EBC) 40+ (80+)