In a saucepan, bring the wine, shallot, carrots, mushrooms, garlic, parsley, thyme, and bay leaf to a simmer, and simmer until almost all the liquid has evaporated.
Add the peppercorns and jus, then simmer for 10 to 15 minutes, or until the stock is reduced to a sauce consistency.
Strain the sauce through a chinois or fine-mesh conical strainer into a small saucepan.
Makes about 110 milliliters
Bordelaise Syrup
Combine the bordelaise sauce, glucose, sugar, and vinegar in a saucepan and simmer to reduce by about half, until syrupy.