The white grape variety (also VB 91-26-1) is an interspecific new breeding between Cabernet Sauvignon x unknown resistance partners. It is assumed that it is a complex cross between Cabernet Sauvignon x (Silvaner x (Riesling x Vitis vinifera) x (JS 12417 x Chancellor)) as well as the new Cabertin and Pinotin varieties. Accordingly, genes from Vitis labrusca, Vitis lincecumii, Vitis rupestris and Vitis vinifera would be included. The crossing of the hybrids was carried out in 1991 by the owner of the vineyard Valentin Blattner in Soyhières in the Swiss canton of Jura, the selection then took place in the Freytag nursery in Neustadt/Lachen-Speyerdorf in the Palatinate (Germany). The vine is resistant to frost, botrytis and both types of mildew, but tends to have small berries (millerandage). It produces aromatic, fragrant white wines with flavours ranging from Riesling to Sauvignon Blanc. The variety is grown in small quantities in Switzerland (6 ha), Germany, the Netherlands and Austria. In 2016, only the stock in Switzerland was declared (Kym Anderson).