The vineyard owner Valentin Blattner from Soyhières in the canton of Jura(Switzerland) has been active as a private breeder since the 1980s. The crosses were carried out on his farm, with the subsequent selection and breeding partly carried out at vine nursery Freytag in Neustadt/Lachen-Speyerdorf in the Palatinate(Germany). Great importance was attached to resistance to frost and fungal diseases, which is why varieties of the species Vitis amurensis or with genetic parts thereof were mostly involved. These are therefore mostly PIWI varieties.

However, grower does not usually mention both parents, but only prominent varieties, such as Cabernet Sauvignon, which is often involved. Blattner created the new varieties Birstaler Muskat, Blattner grape varieties (many different ones with "Blattner Cal" and consecutive number), Cabaret Noir, Cabernet Blanc, Cabernet Colonjes, Cabernet Early, Cabernet Foch, Cabernet Jura, Cabertin, Millot-Foch, Petite Milo, Pinotin, Réselle, Riesel, Satin Noir, Sauvignac and VB 32-7. Some of these varieties are cultivated in Belgium, Germany, Canada, the Netherlands, New Zealand, Austria and above all in Switzerland. See also under crossing and new breeding.
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Thorsten Rahn
Restaurantleiter, Sommelier, Weindozent und Autor; Dresden