Remove the smell of eggs. When making a cake, the cake put dried lemon on the cake is the use of egg-splitting method to make a cake called lemon chiffon cake, meaning to remove the egg fishy flavor, so that the cake tastes fresh and not greasy, and play a role in neutralizing the alkaline effect, because the citric acid can regulate the acidity of the eggs, especially the egg white, so that the meringue is not easy to defoam in the process of whisking and mixing, and weakening the fishy flavor of the egg.