A. Escoffier, A guide to modern cookery (1907)
“ Practical men are not agreed as to the need of Lenten Espagnole. The ordinary Espagnole being really a neutral sauce in flavour, it is quite simple to give it the necessary flavour by the addition of the required quantity of fish fumet. It is only, therefore, when one wishes to conform with the demands of a genuine Lent sauce that a fish Espagnole is needed. ”
