noun
espagnole sauce
A classic French brown sauce, one of the mother sauces in French cuisine. Used as a base for demi-glace and other sauces.
エスパニョールソースは、フォン・ド・ヴォーをベースに作られる。
Espagnole sauce is made with a veal stock base.
Variant with interpunct; less common but still seen.
Demi-glace is a derivative of espagnole sauce, often used in Japanese Western-style cooking.
From French 'sauce espagnole'.