How To make Tomatensalat (Tomato Salad)

5 ea Tomatoes; Med., Chopped
1 tb Sugar
1 ts Salt
1 ts Basil; Dried
1/4 ts Thyme; Dried
1/4 ts Pepper; Freshly Ground
1/2 c Vegetable Oil
6 tb Vinegar
1 tb Worcestershire Sauce
1 ea Onion; Large, Diced
Blend all ingredients together and chill for 1 hour before serving. Serve on lettuce leaves.