Hollandaise sauce a blender or food processor. Temperature control is critical, as excessive temperature can curdle the sauce. Hollandaise can be frozen. Basic ingredients for the sauce are; Being a mother sauce, hollandaise sauce is the foundation for many derivatives created by adding or changing ingredients, including: Hollandaise sauce Hollandaise sauce ( or ; ), formerly also called Dutch sauce, is an emulsion of egg yolk, melted butter, and lemon juice (or a white wine or vinegar reduction). It is usually seasoned with salt, and either white pepper or cayenne pepper. Hollandaise is one of the five mother sauces in French cuisine.
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