What Is Demi Glace Made Of?
Demi-glace is a rich and flavorful sauce that is made by reducing brown stock (beef or veal stock) with red wine, mirepoix (a mixture of diced onions, carrots, and celery), and tomatoes. This reduction is then simmered for several hours until it reaches a thick and glossy consistency. The final product is a concentrated sauce that is typically used to add depth of flavor to a variety of dishes, such as stews, gravies, and sauces.