Stuffed Tomato Salad

3 good sized tomatoes
1/2 cup diced celery
half of cucumber, peeled and diced
1/2 tbps finely chopped onion
3 tbsp mayonnaise
Lettuce
Salt to taste

Wash the tomatoes, cut the stem end and scoop out centers. Diced centers and combine with celery, cucumber, onion and enough salt to suit taste. Then fold in the mayonnaise. Cover and chill the filling and tomato shell separately. Stuff tomatoes with filling and serve at once on crisp lettuce