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 in spiced stews. French cuisine varies according to the season. In summer, salads and fruit dishes are popular because they are refreshing and produce is inexpensive and abundant. Greengrocers prefer to sell their fruit and vegetables at lower prices if needed, rather than see them rot in the heat. At the end of summer, mushrooms become plentiful and appear in stews throughout France. The hunting season begins in September and runs through February. Game of all kinds is eaten, often in elaborate dishes that celebrate the success of the hunt. Shellfish are at their peak when winter turns to spring,