espagnole versus demi glace
doc,
went into some old book, a menu dated 1809, 28 november in the restaurant of the Very brothers in Paris they served 'des escalopes de saumon a l'espagnole'. in that period of Antonin Carême, the official brown sauce must have been the espagnole was also cheaper. however it was him who started to classify sauces like basic and great brown sauces, basic i believe they refered to the base stocks. the espagnole i agree is a fore runner to the demi glace, an could be considered as a mother sauce. howevver i will try to gather more historical facts from my retired teacher and let you all know, however, i am still surprised, that we use espagnole still today in the US, in europe that sauce is not used anymore. we always refer to the demi glace or a brown veal stock, when preparing brown sauces. maybe the french still cook it.
hans