Hollandaise sauce mayonnaise and Béarnaise, the egg does not coagulate as in a custard; rather, the lecithin in the eggs serves as an emulsifier, allowing the mixture of the normally immiscible butter and lemon juice to form a stable emulsion. To make hollandaise sauce, beaten egg yolks are combined with butter, lemon juice, salt, and water, and heated gently while being mixed. Some cooks use a double boiler in order to control the temperature. Some recipes add melted butter to warmed yolks; others call for unmelted butter and the yolks to be heated together; still others combine warm butter and eggs in
La Fête espagnole short and disconnected sequences from throughout the film. These nitrate negative fragments were acquired by Henri Langlois in 1938 from Éclair, and were transferred to safety film in 1948; nothing else of "La Fête espagnole" has turned up since then. Nevertheless, this film remnant is still shown periodically in retrospectives of Dulac's work and was included, in 2012, in the Cinémathèque Française's festival "Toute la mémoire du monde". La Fête espagnole La Fête espagnole is a 1920 French silent film directed by Germaine Dulac and written by Louis Delluc. It was cited by critic and film historian Georges Sadoul as