It’s a few minutes before 1 pm and we rush through the old parts of Donostia in the direction of the fish market, more precisely towards the small street of Pescaderia, where there is the Nestor bar at number 11. The rush is, naturally, not accidental because we want to taste the tortilla de patatas, the famous Spanish potato omelette, different at each restaurant in the country. The Nestor’s tortilla is by far best in town, crisp on the outside and unbelievably creamy on the inside, the taste full and juicy.