Entrepanes Díaz in upper Eixample is a sandwich spot from the Bar Mut team where all the waiters are old enough to actually remember when the pocket calculator was invented. They all wear pressed white dress shirts, waistcoats, and bow ties, and always take the time to get your order just right. Meanwhile, the sandwiches are pure joy, overflowing with classic Iberian ingredients like morcilla, tortilla, and squid. The juicy calamari baguette is the best in town, while the oxtail with spicy mayo, parmesan, and arugula is a fantastic meatier option. All of it, including the selection of tapas, makes for a great quick bite on your way back from Park Güell.