Sauces are what make French cuisine so distinctive. Hundreds of sauces were developed over hundreds of years. Auguste Escoffier, the famous Edwardian chef, was key to bringing French cuisine to the fine tables in the grand houses of the Edwardian era. He is credited for narrowing the list to five mother sauces. From these five, many variations, or daughter sauces can be made.
Espagnole sauce is a dark sauce which comes from Spain where Auguste Escoffier discovered it.