The most famous restaurant on the lake is 6km outside Puerto Octay on the road to Frutillar, and packs in the crowds for the main attraction, succulent jabalí (wild boar, fatty but fantastic) cooked on 3.5m spits across a giant fogón behind the buffet.
It's expensive, but it's an elaborate all-you-can-eat buffet and includes a juice, wine or beer, and everything is excellent.