The Guiterrez-Porta family has been making wine for nearly forty-five years in the Cachapoal Valley, a short hour and a half drive from Santiago. It wasn't until 1991 that they began producing wine under the name Casa Porta. After being bought out by Vinedos y Bodegas in 1997, the winery's capital significantly increased. This lead to the acquisition of vineyards throughout several of Chile's wine regions, including Aconcagua, Maipo, Colchagua, and Bio-Bio. They currently produce wine under six different categories (Varietal, Reserva, etc.), each with several wines including Cabernet Sauvignon, Carmenere, Chardonnay, Syrah, Sauvignon Blanc, and Pinot Noir.
The Reserva 2005 Cabernet Sauvignon is sourced from the Aconcagua Valley. This viticultural region lies just north of Santiago and in the shadow of the America's tallest mountain, Mount Aconcagua. Cabernet Sauvignon is the most widely grown varietal here, but the valley is also home to Carmenere, Cabernet Franc, Chardonnay, Merlot, Pinot Noir, Sauvignon Blanc, and Syrah.