A recipe for making potato salad – (2). 1-1/2 pints of mashed potatoes, 2 hard-boiled eggs, 2 tablespoonfuls of salad oil, 1/2 a teacupful of milk, 1 teaspoonful of mustard, pepper, salt, and lemon juice to taste. Make a dressing of the oil, milk, mustard, and seasoning. Mash the yolks of the eggs and mix them with the lemon juice, and add this to the dressing. Chop the whites of the eggs up fine. Mix the mashed potatoes, dressing, and chopped whites of eggs well together. Turn the mixture into a salad bowl or glass dish, and garnish with parsley or watercress and beetroot.