This section is from the book "A Handbook Of Invalid Cooking", by Mary A. Boland. Also available from Amazon: Handbook of Invalid Cooking.
Separate the yolks from the whites of two eggs, and put them into bowls. To the yolks add a saltspoon of salt and one fourth of a saltspoon of pepper. Beat with a Dover egg-beater until light. Then add two tablespoons of milk. Beat the whites until stiff, but not as stiff as possible, and fold, not beat them into the yolks, so that the whole shall be very light and puffy. Pour the mixture into a buttered omelet-pan, and cook slowly until the under side begins to change color and become brown, or for about two minutes. Then put the pan on the grate in the oven for about one minute, to cook the upper surface. One must endeavor to avoid both over and under cooking. If the omelet is not done enough, the raw egg will ooze out after it is folded; on the other hand, if it is cooked too much, it will be dry and tough. When it seems to be coagulated on the upper surface, run a case-knife under it to separate it from the pan, and fold one half over the other. Take the platter which is to receive it in the right hand, lay it against the edge of the pan, and tip the omelet out. Serve immediately.
An omelet is a dainty and delicate way of serving eggs, and may be well made by any one who will bear in mind that the cooking temperature of albumen is 160° Fahr., and that if exposed to a very much higher degree of heat for many minutes, it will be spoiled, - rendered both unpalatable and indigestible.
 
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