Dutch Sauce. No. 3. For Boiled Fish. (Mr. Courtenay.)
Boil ½ lb. of butter, 2 blades of mace, a little flour and water. When off the boil add the yolks of 3 eggs. Let it simmer over the fire and stir it constantly, taking care not to let it boil; add at the last 3 spoonfuls of vinegar or lemon-juice, which is better. This sauce is good with boiled tench, or for salmon or any other boiled fish.