Peppercorn sauce without brandy. Based on the classic French steak sauce, our easy peppercorn sauce recipe is ready in minutes. A rich creamy peppercorn sauce made with simple ingredients, butter, shallots, garlic, peppercorns, wine or grape juice, stock and cream. Peppercorn sauce for steak is the obvious way to serve, but it can also be served with chicken, vegetables, mushrooms or as a pasta sauce.