HALIBUT STEAK À LA FLAMANDE
Butter a baking-pan, sprinkle with chopped onion, and lay a halibut steak upon it. Pour over the beaten yolk of an egg, season with salt and pepper, add the juice of half a lemon, and one tablespoonful of butter cut into small pieces. Bake for thirty minutes. Add to the liquid remaining in the pan enough boiling water to make the required quantity of sauce, and thicken it with browned flour.