Absolutely! Coq au vin tastes even better when made ahead, as this allows the flavors to meld and deepen. Prepare the dish up to 2 days in advance, cool it to room temperature, and then store it covered in the refrigerator. Reheat gently on the stove, stirring occasionally, until heated through. For best results, store the sautéed mushrooms and crispy pancetta in separate containers in the refrigerator and add right before serving.