Salt Cod and Green Pepper Tortilla

My idea of heaven? Eating fat, juicy salt cod tortillas at crowded Basque sidrerías, the traditional cider houses up in the countryside. The fancier sidrerías serve thick chuletas (steaks) and an assortment of cooked dishes. But at the no-frills rustic ones—usually big eating halls with long wooden tables that are only open during the fresh cider season in March—customers are content with plates of jamón and queso and their beloved tortilla de ba