What is "zweigelt"

Zweigelt is a red wine grape variety developed in 1922, at the Federal Institute for Viticulture and Pomology at Klosterneuburg, Austria, by Fritz Zweigelt. It was a crossing of St. Laurent and Blaufränkisch. It is now the most widely grown red grape variety in Austria, as well as having some presence in Canada's vineyards. In 2008, Austrian plantations stood at , and have expanded in the 2000s as a part of general red wine trend in Austria.