Salad Dressing

Beat the hard-boiled yolk of 2 eggs with 1 teaspoonful of dry mustard. When smooth add by slow degrees 8 dessertspoonsful of oil, 5 of vinegar, 1½ of sugar, and ½ a teacupful of cream. Beat together with a silver spoon until smooth. If bottled this dressing will keep for some days.