Polvo à Lagareiro is a popular 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 give it a smoky flavor. It is then drizzled with a generous amount of olive oil infused with garlic and served with crispy roasted potatoes. Polvo à Lagareiro is a delicious and visually appealing dish that highlights the simplicity and quality of Portuguese ingredients.