2 med. tomatoes, sliced
1 med. cucumber, peeled and thinly sliced (1-1/4 c.)
1/2 med. onion, thinly sliced and separated into rings (1 c.)

ADVANCE PREPARATION:  
Layer tomatoes, cucumber, and onion in 
shallow glass dish

1/2 c. salad oil
1/3 c. vinegar
1 tsp. salt
1 tsp. dried basil, crushed
1 tsp. dried tarragon, crushed
1/8 tsp. pepper
Lettuce

  

ADVANCE PREPARATION (continued): Combine oil, vinegar, salt, basil, tarragon, and pepper; beat well with rotary beater. Pour mixture over vegetables. Cover; refrigerate for 4-6 hours. BEFORE SERVING: Drain vegetables, reserving marinade. Arrange marinated vegetables in lettuce-lined bowl. Pass reserved marinade. Makes 6 servings.
 

Source: http://www.nancys-kitchen.com