Madeira Sauce - cooking recipe

Ingredients

7 tablespoons unsalted butter
3 tablespoons flour
16 ounces beef stock
1/2 cup madeira wine
2 cups fresh mushrooms, sliced

Preparation

Melt 3 tablespoons of the butter and when it is gently bubbling, add the flour, stirring constantly until brown and smooth.
Add beef stock and wine - keep stirring and stir until thickened. Takes about 15 minutes over medium heat.(This step is more fun while you are sipping some of the Madeira wine that you are using in your recipe).
In a separate pan, saute mushrooms in 4 tablespoons of butter until \"fork tender.\" Add these to the sauce.
Serve warm over beef tenderloins, beef kabobs, etc.