Belgian Dark Strong Ale

BJCP 26d

Overall Impression
A dark, complex, very strong Belgian ale with a delicious blend of malt richness, dark fruit flavors, and spicy elements. Complex, rich, smooth and dangerous.
Comments

Authentic Trappist versions tend to be drier (Belgians would say more digestible) than Abbey versions, which can be rather sweet and full-bodied. Traditionally bottle-conditioned (or refermented in the bottle). Sometimes known as a Trappist Quadruple, most are simply known by their strength or color designation.

History
Most versions are unique in character reflecting characteristics of individual breweries, produced in limited quantities and often highly sought-after.
Ingredients
Belgian yeast strains prone to production of higher alcohols, esters, and sometimes phenolics are commonly used. Impression of a complex grain bill, although many traditional versions are quite simple, with caramelized sugar syrup or unrefined sugars and yeast providing much of the complexity. Saazer-type, English-type or Styrian Goldings hops commonly used. Spices generally not used; if used, keep subtle and in the background.
Commercial Examples
Achel Extra Brune, Boulevard The Sixth Glass, Chimay Grande Réserve, Gouden Carolus Grand Cru of the Emperor, Rochefort 8 & 10, St. Bernardus Abt 12, Westvleteren 12