Monte De Oro Home Monte De Oro’s wines are crafted in a style to showcase the true varietal character of each grape variety, balanced with the fruit-forward terroir of Temecula Valley and subtle influences from extended barrel aging in French, European and American oak barrels. What sets Monte De Oro apart is our careful attention to vineyard practices, such as canopy management and controlling yields, as well as our delicate handling of the fruit and wine throughout its time in the winery.