Hollandaise sauce One of his categories was "allemande", which was a stock-based sauce using egg and lemon juice. Escoffier replaced "allemande" with "hollandaise" in his list of the five mother sauces of haute cuisine. While many believe that a true hollandaise sauce should only contain the basic ingredients of eggs, butter and lemon, Prosper Montagne suggested using either a white wine or vinegar reduction, similar to a Béarnaise sauce, to help improve the taste. In English, the name "Dutch sauce" was common through the nineteenth century, but was largely displaced by "hollandaise" in the twentieth. As in other egg emulsion sauces, like
French cuisine and created new combinations and pairings. Some have speculated that a contributor to nouvelle cuisine was World War II when animal protein was in short supply during the German occupation. By the mid-1980s food writers stated that the style of cuisine had reached exhaustion and many chefs began returning to the haute cuisine style of cooking, although much of the lighter presentations and new techniques remained. There are many dishes that are considered part of French national cuisine today. A meal often consists of three courses, "hors d'œuvre" or "entrée" (introductory course, sometimes soup), "plat principal" (main course), "fromage" (cheese