Leon's Sauce

  • Yield: Makes about 1 1/2 cups

Source: Martha Stewart Living, October 1998


  • 3 tablespoons olive oil
  • 1/2 cup red wine, such as a dry burgundy
  • 2 tablespoons finely chopped garlic
  • 1 tablespoon unsalted butter
  • 8 ounces white button mushrooms, sliced 1/8 inch thick
  • 10 sprigs curly parsley, chopped
  • 2 tablespoons demi-glace
  • Coarse salt and freshly ground black pepper


  1. Heat the olive oil until bubbling and hot, about 1 minute, in a medium skillet set over medium-high heat. Remove skillet from heat; add the wine, garlic, butter, mushrooms, parsley, and demi-glace. Season with salt and pepper. Return to heat, and cook, stirring often, until mushrooms are tender and the sauce is thick and reduced enough to coat the back of a wooden spoon, 5 to 7 minutes. Store in an airtight container, refrigerated, for up to 1 week.


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