Casa Puerto Rico ★ 4.0
Casa Puerto Rico off Plaza Mayor in Madrid is the bocadillo de calamares counter, with squid rings fried to order in the small kitchen behind the standing-room bar, beside fresh-pressed lemon slices.
Try: Bocadillo de calamares
Tip: Cash preferred. Walk-in only. Bocadillo runs 5 euros, cana 2.50 at the standing-room counter.