For help making a classic Béarnaise sauce for your Chateaubriand, scroll down! The sauce will thicken and develop a glossy sheen. Béarnaise can be made up to 1 hour in advance and kept warm in a very clean thermos, but for safety sake, don't keep it … ... peppercorn mushroom cognac sauce. Bring to a boil and cook until reduced by half. It may also be served with béarnaise sauce or a red wine sauce. {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/e\/e9\/Cook-Chateaubriand-Step-1-Version-2.jpg\/v4-460px-Cook-Chateaubriand-Step-1-Version-2.jpg","bigUrl":"\/images\/thumb\/e\/e9\/Cook-Chateaubriand-Step-1-Version-2.jpg\/aid122886-v4-728px-Cook-Chateaubriand-Step-1-Version-2.jpg","smallWidth":460,"smallHeight":306,"bigWidth":"728","bigHeight":"485","licensing":"

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\n<\/p><\/div>"}. Ingredients: 3 tablespoons butter, divided. Ingredients . It may be used in place of a sauce, and can significantly enhance a dish's flavor. Chateaubriand sauce is a culinary sauce that is typically served with red meat It is also sometimes referred to as "crapaudine sauce". Do not be misled while you may or may not like the recipe it is not Chateaubriand.