Reference scale, not a limit on official guideline values.
Bitterness · IBU
18–25
0306090120+
Measured bitterness; perceived bitterness is described in the guideline below.
Brewers Association 2026 · Printed guideline page 38 · PDF page 47. Color graphics are illustrative.
The guideline, in detail
Official style attributes, including what may be present and what should be absent.
Malt aroma & flavor
Malt character is prominent with malt aromas suggesting lightly toasted sweet, malted barley. Smoke beechwood character ranges from very low to medium. Smoky aroma should be not harshly phenolic. Sulfur may be present at low levels. There should be no caramel character. Smoke flavor may create a perception of mild sweetness.
Hop aroma & flavor
Hop aroma and flavor is very low to low, derived from noble-type hops.
Perceived bitterness
Medium
Body & mouthfeel
Medium
Clarity
Appearance should be clear. Chill haze should not be present
Color
Light pale to gold
Fermentation characteristics
Fruity esters and diacetyl should not be present. Very low levels of sulfur-related compounds are acceptable.
Technical specifications, including gravity
Original Gravity (°Plato) 1.044-1.050 (11-12.4 °Plato) • Apparent Extract/Final Gravity (°Plato) 1.008- 1.012 (2.1-3.1 °Plato) • Alcohol by Weight (Volume) 3.8%-4.4% (4.8%-5.6%) • Hop Bitterness (IBU) 18-25 • Color SRM (EBC) 4-5.5 (8-11 EBC)
Keep exploring
Other styles in this guideline group. Similar placement doesn’t guarantee a similar flavor.