1/2 med. onion, chopped finely
1 c. ketchup
1/2 tsp. celery seed
2 tsp. salt
1 c. sugar (may substitute 16 packets of Equal)
2/3 c. oil
1/8 c. vinegar

Put all ingredients in a 1 quart jar. Shake well. Chill.

Serve over vegetables or salad.