Gratin of lettuce and Emmentaler AOP cheese | Cheeses from Switzerland

Ingredients

• butter for the dish
• 1 finely chopped clove of garlic
• 1 finely chopped shallot
• a little butter
• 1 180 g pot of fresh cream
• 100 g of grated, spicy Emmentaler AOP
• salt and pepper
• 400 g of lettuce, blanched and pressed
• a few sprigs of cut chervil
• 80 g of sliced porcini or button mushrooms
• cooking butter
• 1 splash of vinegar
• salt, cayenne pepper
• for 1 medium-sized, flat gratin dish