Bosteels Brewery is a beer brewery in Buggenhout, Belgium. The brewery was founded in 1791 and is still owned and operated by the same family, now its seventh generation. They brew three beers: Tripel Karmeliet, DeuS, and Pauwel Kwak.
Tripel Karmeliet 
Tripel Karmeliet is brewed using three types of grain: wheat, oats and barley.
During the brewing process, it is fermented over a month with two yeasts, re-fermented near Épernay in Champagne, France, and then bottled, after which it is left in a cellar for 9 months and rotated for a week, and then the yeast removed. The process of the second fermentation and storage is also referred to as the "Methode Champagnoise" or "Methode Traditionelle".
Pauwel Kwak 
Pauwel Kwak is an amber ale brewed since the 1980s with 8.4% ABV. Supposedly it is named after an 18th century innkeeper and brewer, Pauwel Kwak. The beer is filtered before packaging in bottles and kegs.
As with other Belgian beers, Kwak has a branded glass with its own distinctive shape. It is held upright in a wooden stand; the brewery claims the glass was designed by the innkeeper Pauwel Kwak in the early 19th century for coachmen who would stop at his coaching tavern and brewery named "De Hoorn", though the beer and the glass were not launched until the 1980s. While drinking from the glass, the bulb at the bottom will remain filled for a relatively long time. As soon as air reaches the still-filled bulb, a large amount of beer will gush towards the drinker. This is accompanied by a characteristic sound which sounds like Kwak spoken quickly.
- Elliot, John; Steven Swinford (2005-12-18). "A £32 bottle of beer with your meal madam?". The Sunday Times (London). Retrieved 2007-10-14.
- The Oxford Bottled Beer Database
- Michael Jackson's Beer Hunter - Down on your knees to bless monks' top ale
- Welcome to Bosteels Brewery
- Jackson, Michael, Great Beers of Belgium, Regional Specialties, pp 277–278, ISBN 90-5373-012-5