The red grape variety (also Ouchette) comes from France, According to done in 2012 DNA analysis it is a presumably natural cross between Gouais blanc x Chatus, However, this is based on only 20 DNA markers (see under molecular Genetics ). Incidentally, the same parents are also the variety Sérénèze de Voreppe emerged. Onchette was formerly distributed in the Vallée du Drac in the department of Isère in southeastern France. The nearly extinct variety was replanted as part of a revitalization program in the town of Prébois (near Grenoble). In 2010, however, no stock was reported (Kym Anderson ).
Source: Wine Grapes / J. Robinson, J. Harding, J. Vouillamoz / Penguin Books Ltd. 2012