A rich brown sauce comprised of espagnole sauce, which is further enriched with veal stock and wine and reduced to proper consistency. This is a very long procedure and requires constant skimming. A quick version of this involves reducing brown veal stock to which has been added mirepoix, tomato paste, wine, and brown roux. The latter recipe saves time, but never reaches the intensity of flavor as does the former method.
Glace
A highly reduced stock used as an essence in flavoring sauces and enriching soups and stews. Veal glace is used for all meat preparations and stands up the best to the long reduction required. Fish and shellfish glaces are used, but their flavor can become edirtye tasting and bitter from too long of a reduction.