Polvo à Lagareiro is a traditional Portuguese dish made with octopus. The octopus is first boiled until tender, then roasted in the oven with olive oil, garlic, and salt. The result is a flavorful and tender octopus with a crispy and golden exterior. Polvo à Lagareiro is often served with boiled potatoes and drizzled with more olive oil. It is a popular dish in coastal regions of Portugal and is enjoyed for its unique texture and taste.