Dutch Sauce. No. 7.
To a small onion, sliced, add a little horse-radish, parsley, half an anchovy, half a bay-leaf, 2 or 3 spoonfuls of Elder vinegar, and a little second stock. Set it on the side of the stove to simmer; then strain it off, and return it into the stewpan with a little pepper and salt.
Just before using add a liaison of the yolks of 3 or 4 eggs and thick cream. Mix all well together, and make hot; add a piece of butter about the size of a walnut, worked in a cream, and a spoonful of lemon-juice; stir till quite hot, and pass through a tammy. Have a hot basin ready; wet the middle of the tammy, and put in the sauce. Take hold of the tammy at both ends and twist it different ways, wring the sauce through, and dish it at once.