Casa Guedes Tradicional
Without a doubt, one of the most heavenly—and budget-friendly—meals in Porto is the slider filled with roast pork and sheep's cheese from this snack bar. Served in a warm country roll and oozing with pungent Serra da Estrela cheese, it's no wonder there are always lines out the door. Casa Guedes now has three branches in Porto, including a trendy rooftop, but the "traditional" branch remains the most inviting.