The Zweigelt (German: [ˈt͡svaɪ̯ɡl̩t] ), also known as Rotburger, is an Austrian hybrid grape variety created in 1922 by Friedrich Zweigelt (1888–1964), who later became Director of the Federal Institute and Experimental Station of Viticulture, Fruit Production and Horticulture (1938–1945). Zweigelt is a crossing between the St. Laurent and Blaufränkisch grape varieties.

Closest relatives