2 tablespoons vegetable oil |
2 1/2 pounds beef tenderloin, thinly sliced |
2 teaspoons kosher salt |
1 teaspoon freshly ground black pepper |
2 tablespoons clarified butter |
1 cup sliced cremini mushrooms |
1/2 cup chopped onion |
1/4 cup white wine |
2 tablespoons tomato paste |
2 teaspoons dijon mustard |
3 cups demi-glace |
1 1/4 cups sour cream |
*can be found in gourmet food stores |
serving suggestion: egg noodles, cooked |