Chateaubriand with Mushroom Sauce

Yield: 1 Servings
Categories:
22-lb beef tenderloins
4ozButter
1lbMushrooms, thinly sliced
1/4cFinely chopped shallots (or white onion)
2tbAll-purpose flour
1cWater
1/2cDry vermouth (zinfandel, chardonnay, etc.)
1tsBeef boullion, or 1/2 can beef broth
1/4cMinced black olive
Salt
Pepper
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