For the curd potato gratin, peel potatoes and cut into thin slices. Then fry shallots, garlic and bacon in a hot pan.
Now grease a baking dish with butter, arrange the potato slices like a roof tile and sprinkle leek, shallots, bacon and garlic on top.
Mix curd with cream and egg yolk, season, pour over gratin, sprinkle with cheese and bake in hot oven at 170°C for 45 minutes.