Demi-glace warm. At this point, the espagnole is prepared, and when it is finished, the brown stock is added in equal portions to the espagnole. Demi-glace keeps very well, about six months refrigerated or almost indefinitely frozen. Due to the considerable effort involved in making the traditional demi-glace, chefs commonly substitute a simple "jus lié" of veal stock or to create a simulated version, which the American cookbook author Julia Child referred to as a "semi-demi-glace"(i.e. sans espagnole sauce). However, even today, many chefs who prepare French "haute cuisine" use a demi-glace prepared in their own kitchen. Concentrates and mixes, mostly
French cuisine appearance of the nouvelle cuisine. The term "nouvelle cuisine" has been used many times in the history of French cuisine which emphasized the freshness, lightness and clarity of flavor and inspired by new movements in world cuisine. In the 1740s, Menon first used the term, but the cooking of Vincent La Chapelle and François Marin was also considered modern. In the 1960s, Henri Gault and Christian Millau revived it to describe the cooking of Paul Bocuse, Jean and Pierre Troisgros, Michel Guérard, Roger Vergé and Raymond Oliver. These chefs were working toward rebelling against the "orthodoxy" of Escoffier's cuisine. Some