No. 15 Sauce au jus piquant.
Put two spoonfuls of chopped eschalots into a stewpan with three of vinegar; reduce it to half over the fire, then add eighteen spoonfuls of demi-glace (No. 9), and six of consommé (No. 134), boil it about a quarter of an hour, skim it well, add half a teaspoonful of sugar, and when again forming a light glaze, add two tablespoonfuls of chopped gherkins, and a little cayenne pepper; it must not boil afterwards.