It’s a crisp and cold winter morning in Alentejo. We are in Mora, a one-and-a-half-hour drive from Lisbon, to visit Susana Esteban’s winery, a very simple adega where her award-winning wines are made. Susana welcomes us at the door and leads us inside, where, sitting among the barrels, we taste her wines. They leave a strong impression on us, and not just because of the early hour – the wines have a distinct personality, one that’s formed on the vine. Yet when we peek outside, there are no vineyards in sight, only oak and cork trees. That’s because Susana grows her grapes in Serra de São Mamede, a mountain range in Portalegre, one-hour east of Mora and close to the Spanish border.