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.
The Whitehouse Cookbook, by Mrs. F.L. Gillette (Year 1887)