Altar Uco operates in the Uco Valley, Mendoza's high-altitude wine region known for its cool nights and mineral-rich soils. The winery produces whites and reds that reflect the valley's continental climate and elevation. Edad Media Blanco, a blend of Chardonnay and Sauvignon Blanc, demonstrates the region's capacity for crisp, structured whites. Edad Moderna Malbec showcases the Argentine classic in its home territory, where the variety achieves depth and balance. Edad Moderna Blanco, also a Chardonnay and Sauvignon Blanc blend, rounds out the portfolio. Both Wine Advocate and Decanter have rated these wines, placing them among the valley's serious expressions.