Julienne with porcini mushrooms and tongue

Cut the mushrooms, onion, and tongue into strips. Heat some oil in a pan, add the onion; when it turns pale, add the mushrooms and tongue. Fry until golden.

Add sour cream and cream to the pan, immediately reduce the heat and simmer for 15 minutes.

Place the mixture in ramekins, sprinkle with grated cheese, and put under the grill until the cheese melts.