Recipe and Photography Courtesy of Foodland Ontario
On large platter, place lettuce. Arrange tomatoes, cucumber, peppers, eggs, celery, green onions, potato, mushrooms and cheese, on lettuce. Cover and refrigerate until serving.
Dressing: In small bowl, whisk together oil, lemon juice, garlic, mustard, salt, pepper and sugar; drizzle over salad just before serving.
Tip: Store any leftover dressing in a sealed jar in the refrigerator.