When it comes to peppercorn sauce, there are a few different types of alcohol that can be used as a replacement for brandy. These include white wine, red wine, and even Cognac. Each of these options will add a different flavor to the sauce, so it is important to choose one that will complement the other ingredients. For example, if the sauce is being made with chicken, then a white wine would be a good choice. If the sauce is being made with beef, then a red wine or Cognac would be better options.