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
La Fête espagnole in Nice; Louis Nalpas agreed to back the production as long as it was shot there, though some additional material was filmed in the Basque border town of Hondarribia. For the duration of the shooting, which concluded in November, Delluc was only seen intermittently on the set. He was, however, fully involved in editing the film with Dulac. It was screened for critics on March 17, 1920, and went into release either March 31 or May 7, 1920. "La Fête espagnole" was widely praised by critics as something vital and new in French cinema, though—as observed by Tami Williams—with the