Definition
Espagnole is short for 'sauce espagnole,' one of the five French mother sauces. It is a rich, dark brown sauce, made from brown stock, browned mirepoix (onions, carrots, celery), and a brown roux, heavily reduced. This foundational sauce forms the base for many other classic sauces. Espagnole can be seen as the starting point for many deeply flavorful dishes. Unlike gravy, it is not usually served by itself, but used as an ingredient.