The white grape variety (breed number Walker 09338-016) is a complex, interspecific new breed between varieties of the species Vitis vinifera (97%), Vitis rupestris (1.5%) and Vitis arizonica (1.5%). The Vitis vinifera varieties involved were Cabernet Sauvignon (62.5%), Chardonnay (12.5%) and Carignan Noir mazuelo (12.5%). The cross was made in the 1990s by the geneticist Dr. Andrew Walker, professor at the University of California in Davis. Incidentally, is from the same varieties Ambulo Blanc emerged. The medium late ripening vine is extremely resistant to the due to the climate change increasing disease Pierce Disease, It produces straw-yellow, juicy white wines flowery Aromas of melons, lychee, pineapple and green apples.