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
Symphonie espagnole Symphonie espagnole The Symphonie espagnole in D minor, Op. 21, is a work for violin and orchestra by Édouard Lalo. The work was written in 1874 for violinist Pablo Sarasate, and premiered in Paris in February 1875. Although called a "Spanish Symphony" (see also Sinfonia concertante), it is considered a violin concerto by musicians today. The piece has Spanish motifs throughout, and launched a period when Spanish-themed music came into vogue. (Georges Bizet's opera "Carmen" premiered a month after the "Symphonie espagnole".) The "Symphonie espagnole" is one of Lalo's two most often played works, the other being his Cello Concerto.