1/3 c. catsup
1/4 c. vinegar
1/4 c. sugar
1 c. salad oil
1 tsp. salt
1/4 tsp. Tabasco sauce
1 tsp. Worcestershire sauce
1 med. onion, chopped

Combine all ingredients in blender and blend until smooth. Put in airtight jar and keep in refrigerator.