Take eight or ten good-sized cold boiled POTATOES, slice them end-wise, then crosswise, making them like dice in small squares. When you are ready to cook them, heat some butter or good drippings in a frying pan; fry in it one small onion (chopped fine) until it begins to change color and look yellow. Now put in your POTATOES, sprinkle well with salt and pepper, stir well and cook about five minutes, taking care that you do not break them. They must not brown. Just before taking up stir in a tablespoonful of minced parsley. Drain dry by shaking in a heated colander. Serve very hot.
The Whitehouse Cookbook, by Mrs. F.L. Gillette (Year 1887)