Fry two medium-sized, sound, sliced onions in a frying-pan with two ounces of butter, but do not brown them; mix in half a spoonful of flour, and a large cupful of sweet cream; season with a pinch of salt, half a pinch of white pepper, and the third of a pinch of grated nutmeg. Cook for eight minutes, stirring constantly with the spatula; then add twelve sliced, hard-boiled eggs, and heat together thoroughly for two minutes without letting it boil again ; pour on a hot dish and serve.