Hard-boil six eggs, cut them into halves lengthwise, take out the yolks, keeping them whole. Cut the whites into fine strips. Make a cream sauce. Add to it two tablespoonfuls of finely chopped sardines or finely chopped lobster or crab, a tablespoonful of tarragon vinegar. Add the whites of the eggs, and, when quite hot, add the yolks, without breaking them. Turn this at once into a heated dish, garnish the dish with triangular pieces of toast, and send to the table. Or, if you like, make the sauce, season it and put a layer into the bottom of the baking-dish, then a layer of Parmesan cheese, then a layer of the yolks, pressed through a sieve, and so on, alternating, having the last layer of the yolks of the eggs. Dust over a few bread crumbs, put here and there bits of butter, and brown quickly in the oven.