• 4 cups boiling water 1 cup oatmeal
• 1 teaspoon salt

Put water and salt in top of double boiler, place in direct contact with range, sift in oatmeal slowly, and boil for five minutes, stirring often; cover, and cook over hot water four hours, or cook on back of range over night.

Better Meals for Less Money, by Mary Green (Year 1909)