Polvo à Lagareiro is a classic Portuguese dish that features tender octopus cooked with olive oil, garlic, and roasted potatoes. The octopus is first boiled until tender, then grilled or roasted to achieve a crispy exterior. The potatoes are roasted until golden brown and crispy, and the dish is finished with a drizzle of olive oil and a sprinkle of salt. Polvo à Lagareiro is a flavorful and satisfying dish that showcases the simplicity and quality of Portuguese ingredients.