Besciamella Sauce Recipe

1. In a small saucepan, melt the butter over moderate heat without letting it brown. Remove the pan from the heat, add the flour, and stir together thoroughly.
2. Add the milk and the cream, and beat with a whisk to dissolve the flour partially. Then return the pan to moderate heat and, whisking constantly, bring the sauce to a boil. When it is quite thick and smooth, reduce the heat to its lowest point and simmer the sauce for 2 or 3 minutes to remove any taste of raw flour. Stir in the salt, pepper, and nutmeg
3. If the sauce is not to be used right away, stir it every now and then as it cools to prevent a skin from forming on its surface. Cover it with plastic wrap and refrigerate; it will solidify when cold. Reheat it to tepid, stirring constantly, before using. Thin it with a little more milk or cream if it seems too thick