Weyerbacher Brewing Company is a brewery in Easton, Pennsylvania, United States, founded in 1995 by Dan and Sue Weirback.
 The brewery is well known for its "huge taste" beers.
 Most of their brews are high in alcohol, with QUAD clocking in at 11.8% alcohol by volume, and a one-off 10th anniversary ale called Decadence brewed to 13% alcohol by volume.
 Hops Infusion is one of the bitterest examples of the IPA style.
 Weyerbacher is also a pioneer of aging beer in wooden barrels previously used for aging bourbon.
 This process was used to transform Old Heathen imperial stout into Heresy, Blithering Idiot barley wine into Insanity, Merry Monks Belgian tripel into Prophecy, and QUAD Belgian quadrupel into Blasphemy.
 These four styles are all very high-alcohol brews with complex flavor profiles; the barrel-aging lends additional oak and whiskey flavors.
 The results have been widely praised by fans of huge beers, though persons accustomed to more mainstream beer may find them an acquired taste.
Baltic Beverages Holding is a brewing company owned by Carlsberg Group.
 It is a significant operator in the brewing industry in Russia, Ukraine, the Baltic countries and Kazakhstan, most notably holding a controlling stake in Baltika Breweries.
 The company markets a range of beer brands from 19 breweries, ten of which are in Russia, four in the Baltic countries, three in Ukraine, one in Kazakhstan and one in Uzbekistan.
 The company was a 50-50 joint venture between Carlsberg and Scottish & Newcastle prior to Carlsberg's April 2008 acquisition of S&N.
Lvivske () is a Ukrainian beer which traces its roots to a monastic beer of 1715.
 It is produced by Slavutych, a member of the Carlsberg Group.
 Lvivske produces beer under six brand names for domestic and foreign markets.
Karlsberg Bulgaria is the Bulgarian subsidiary of the Carlsberg Group.
 Since 2002, it owns the brewery in the city of Shumen, where it brews mainly Shumensko pivo (Шуменско пиво).
The Carlsberg Group ( ; ] ) is a global brewer employing around 41,000 people, primarily located in Western Europe, Eastern Europe and Asia.
 Founded in 1847 by J. C. Jacobsen, the company's headquarters is located in Copenhagen, Denmark.
 Since Jacobsen's death in 1887, the majority owner of the company has been the Carlsberg Foundation.
 The company's flagship brand is Carlsberg Beer (named after Jacobsen's son Carl) but it also brews Tuborg, Kronenbourg, Somersby cider, Russia's best-selling beer Baltika, Belgian Grimbergen abbey beers, and more than 500 local beers.
Grimbergen is the brand name of a variety of Belgian abbey beers. Originally made by Norbertine monks in the Belgian town of Grimbergen, it is now brewed by two different breweries in Belgium and France.
Habeco (also HABECO, Hanoi Beer Alcohol and Beverage Joint Stock Corp., Vietnamese: "Tổng công ty Cổ phần Bia – Rượu – Nước giải khát Hà Nội" ) is a beverage company headquartered in Hanoi, Vietnam.
 It is the third largest beer company in Vietnam and owner of the brands Hanoi Beer and Truc Bach Beer.
 It is under the ownership and authority of the Ministry of Industry and Trade, Vietnam and has a strategic partnership with Carlsberg Group, which owns more than 10% of the company's shares as of November 2012.
Carlsberg Croatia is a brewery in Koprivnica, Croatia.
 Its name before March 1, 2004 was "Panonska pivovara".
 Carlsberg Croatia is part of the Carlsberg Group.
 The Managing Director of Carlsberg Croatia in 2004 was "Jørn Pedersen".
Carlsberg Srbija (full legal name: "Carlsberg Srbija d.o.o. Čelarevo") is a Serbian beer brewery, based in Bačka Palanka, Serbia.
 It is majority owned by Danish Carlsberg Group since 2003 and it has around 600 employees.
 It is well known by its signature brand Lav pivo.
 According to data from 2012, Carlsberg Srbija holds 28.4% of Serbian beer market, placing it second, behind market leader Apatinska pivara.
Jørgen Buhl Rasmussen (born 18 August 1955) is the Danish Chief Executive of the Danish multi-national brewing company Carlsberg Group (Carlsberg A/S), based in Copenhagen (native "København") in Denmark.
 Carlsberg is the name of a district of Copenhagen.
 The main shareholder of Carlsberg is the Carlsberg Foundation.

Question: The Carlsberg Group brews which type of beer that was originally made by Norbertine monks?
Answer: Grimbergen