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 His "official" Violin Concerto in F, and his Symphony in G minor, written thirteen years later, are neither performed nor recorded as often. A typical performance runs just over half an hour. One of the shorter recordings, conductor Eugene Ormandy's 1967 recording with the Philadelphia Orchestra, featuring violinist Isaac Stern, runs 32 minutes and 43 seconds. It was common practice until the middle of the 20th century for performances of the work to omit the Intermezzo, leaving a four-movement work that more closely reflected the traditional structure of a symphony. The "Symphonie espagnole" had some influence on the genesis of