Ommegang began brewing Belgian-style ales in 1997. Built by Don Feinberg, an aficionado of Belgian beers, it started up in a purpose-built building based on a traditional Belgian farmhouse, set on a former 136 acre hop farm in the Susqehanna River Valley, four miles south of Cooperstown, New York in the Town of Middlefield.
Since its opening, Ommegang has grown rapidly — in early 2005, its owner said they have been unable to meet demand for their ales and as a result would add 40 percent to their production capacity over the next year.
Don Feinberg sold Ommegang in 2003 to Belgian brewer Brouwerij Duvel Moortgat, brewers of the world-renowned Duvel Golden Ale. As a result, Ommegang Ales are made both in Belgium and in Cooperstown, New York. It should be noted that Duvel Moortgat brewed limited amounts of beer for Brewery Ommegang in 2006 to help meet demand, but has not brewed any since then.
Each summer, the brewery hosts a large beer-tasting event, known as Belgium Comes to Cooperstown. The event, which occurs on a Saturday in July, includes four hours of unlimited beer sampling of over 200 Belgian and Belgian-style beers, followed by food, live music, and a bonfire. The 2007 version of the event added a Friday night beer dinner for 250 people, with 7 courses and 14 beers to pair with them.