Irma Rombauer was an American cookbook author, best known for The Joy of Cooking, one of the world's most widely read cookbooks. Following Irma Rombauer's death, periodic revisions of the book were carried out by her daughter, Marion Rombauer Becker, and subsequently by Marion's son Ethan Becker. The Joy of Cooking remains in print, edited by members of the Rombauer–Becker family, and more than 18 million copies have been sold.