This section is from the book "The White House Cook Book", by Hugo Ziemann, F. L Gillette. Also available from Amazon: The White House Cook Book.
Soak one cup of oatmeal in a quart of water over night, boil half an hour in the morning, salted to taste. It is better to cook it in a dish set into a dish of boiling water.
This healthful oat preparation may be procured from the leading grocers and is prepared as follows: Put into a double saucepan or porcelain-lined pan a quart of boiling water, add a saltspoonful of salt, and when it is boiling add, or rather stir in gradually, three ounces of flakes. Keep stirring to prevent burning. Let it boil from fifteen to twenty minutes and serve with cream and sugar.
Ordinarily oatmeal requires two hours' steady cooking to make it palatable and digestible. Wheaten grits and hominy one hour, but a half hour longer cooking will not injure them and makes them easier of digestion. Never be afraid of cooking cereals or preparations from cereals too long, no matter what the directions on the package may be.
To one teacupful oatmeal add a quart of cold water, a teaspoonful of salt; put in a steamer over a kettle of cold water, gradually heat and steam an hour and a half after it begins to cook.
 
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