Make a simple salad of Romaine lettuce and sliced tomatoes and place in a large bowl for tossing. You may use iceberg, but I think Romaine is better. Tear the lettuce into bite size pieces. I use a salad spinner to get the lettuce as dry as possible. If you do not have a salad spinner, blot the leaves with paper towels. Don't cut with a knife as it wilts the lettuce. Add one large sliced tomato to the lettuce. Chill in the refrigerator.
When you are ready to serve the salad, shake the dressing vigorously and pour enough to coat the lettuce, not drown it, and serve immediately.