The winery is Bodegas Salentein, it produces a high-quality grape that is used to make the premium varieties of Finca El Portillo. The winery Bodegas Slentein have a hard time finding that on the label.  It’s more easily recognized as “El Portillo” (or technically, “Finca El Portillo”), which is the name of the vineyard estate from which the grapes are grown in the Valle de Uco in the Mendoza Region.