Drizzle this sauce over simple roast chicken, game, beef or vegetarian roasts and you have a gourmet meal. You can use one kind of mushroom or a blend of different varities. I like Shiitake mushrooms in this recipe. Remember the better quality wine and broth you use, the better the finished sauce.
- In a medium skillet, melt the butter and saute the mushrooms for about 3 minutes, then stir in flour, combining well.
- In another skillet, combine the wine, shallots and vinegar, boiling until thickk, about 3 minutes.
- Reduce heat to medium. Add broth, Worcestershire, tomato paste and rosemary, cooking for 1 minute.
- Add mushroom mixture and cook 3 minutes, stirring constantly, then add mustard to sauce.
- Serve warm.