Lambic & Belgian Sour Ale - Gueuze-style Ale

BJCP 20-B

AROMA

The aroma of these beers is a complex blend of aromas from a wide variety of microbiota. These aromas include: horsey, horse blanket, sweaty, oaky, hay, and sour. Other aromas that may be found in small quantities are: enteric, vinegary, and barnyard. There can be a very fruity aroma, and some mustiness may be detected. Typically, no hop aroma or diacetyl are perceived.

APPEARANCE

Gold to medium amber color. May be slightly cloudy. Head retention is not expected to be very good.

FLAVOR

Young examples are intensely sour from lactic acid and at times some acetic acid; when aged, the sourness is more in balance with the malt and wheat character. Fruit flavors from esters are simpler in young Gueuze and more complex in the older examples. A slight oak, cork or wood flavor is sometimes noticeable. Typically, no hop flavor or diacetyl are perceived.

MOUTH FEEL

Younger bottles (less than five years old) tend to be sparkling, but older vintages are at times less carbonated. Light to medium-light body. Avery faint astringency is often present, like wine, but no more than a well-aged red wine.

OVERALL

Intensely refreshing, fruity, complex, sour, pale wheat-based ales fermented with a variety of microflora.

INGREDIENTS

Unmalted wheat (30-40%) and aged hops are used. Traditionally, these beers are spontaneously fermented and aged with naturally occurring yeast and bacteria in oak or chestnut barrels. Home-brewed and craft-brewed versions are more typically made with pure cultures of yeast, including Saccharomyces and Brettanomyces, along with Pediococcus and Lactobacillus bacteria, in an attempt to recreate the effects of dominant microflora of the Senne/Zenne valley.

COMMENTS

Gueuze/geuze is traditionally made by blending lambic that ranges in age from three years to less than one year and then bottled. Typically, gueuze/geuze has a smoother palate than straight lambic.

HISTORY

Uniquely sour ales from the Senne (Zenne) Valley of Belgium which stem from a farmhouse brewing tradition several centuries old. Gueuze is the French spelling, while geuze is the Flemish spelling.

COMMERCIAL EXAMPLES

Boon, Cantillon, Hanssens, Lindeman's, Boon Mariage Parfait, Girardin, Vandervelden Oud Beersel, DeKeersmaeker.

VITAL

OG: 1.044-1.056 IBUs: 10-15 FG: 1.006-1.012 SRM: 4-15 ABV: 4.7-5.8%