6 cups chicken stock |
3 tablespoons unsalted butter |
1 tablespoon olive oil |
1 yellow onion finely chopped |
1/2 pound white button mushrooms brushed clean and sliced |
2 cups medium-grain rice such as arborio |
1/2 cup dry white wine |
3 tablespoons beef demi-glace |
1/3 cup grated parmigiano-reggiano cheese |
1/4 teaspoon salt |
1 teaspoon freshly ground black pepper |