Dubbels are also characterized by low-medium to medium bitterness. No diacetyl is acceptable. Yeast-generated fruity esters (especially banana) are appropriate at low levels. Head retention is dense and mousse-like. Chill haze is acceptable at low serving temperatures. Often bottle conditioned a slight yeast haze and flavor may be evident. Brewer may indicate on the bottle whether the yeast should be intentionally roused or if they prefer that the entry be poured as quietly as possible.
Characteristics:
Original Gravity (Plato) 1.060-1.075 (14.7-17.8 Plato)
Apparent Extract/Final Gravity (Plato) 1.012-1.016 (3-4 Plato)
Alcohol by Weight (Volume) 5.0-6.0 (6.25-7.5)
Bitterness (IBU) 20-30
Color SRM (EBC) 16-36 (32-72 EBC)