beat together egg, cheese, salt, white pepper, mustard, lemon juice, Worcestershire and sugar until well blended. Add oil and beat thoroughly. If not to be used immediately, cover dressing and refrigerate
. Wash spinach thoroughly. Tear off stems, discard stems and drain leaves thoroughly. Then dry on paper towels. Place spinach in salad bowl. Sprinkle with egg and bacon. Add dressing, toss lightly, but thoroughly.