Ravat blanc is a white hybrid grape variety that is a crossing of Chardonnay and a Seibel grape. While the Vitis International Variety Catalogue (VIVC) maintained by the Geilweilerhof Institute for Grape Breeding lists Seibel 5474 as the second parent,[1] Master of Wine Jancis Robinson notes that other authors list Seibel 8724 as the parent.[2] The grape is often confused with the white hybrid grape Vignoles that is often called just Ravat (or officially Ravat 51).[3]
Created in the 1930s by French grape breeder J.F. Ravat, there were over 600 hectares (1,483 acres) of the grape planted in France in 1958. Today, the grape is more likely to be found in the United States where producers in the Finger Lakes AVA of New York use to it make sweet wines.[2]