Preparation: The leek is cut into small pieces, vinegar added, then boiled down to one-half of the portion and strained through a fine sieve. Cream the butter, stir in the yolks of eggs, the leek vinegar, meat extract and bouillon. Place into a double boiler and let it thicken, stirring constantly; season with salt, pepper and finely chopped parsley. It must be smooth. Serve at once.

No. 11—TOMATO GRAVY.

For Fillet, Saddle of Mutton and Mutton Cutlets.

Quantity for 6 Persons.

Preparation: The leek is cut into small pieces and boiled down in vinegar to half of the portion. Cream the butter, add yolks of eggs, tomatoes, flour, bouillon and the strained leek vinegar. Put into a double boiler and let it thicken, stirring constantly. Season with sugar, salt and pepper and serve at once.

No. 12—FINE TOMATO DRESSING.

Quantity for 6 Persons.