1 med. onion, chopped in blender
2/3 c. sugar
1 tsp. salt
1/2 tsp. pepper
1 tsp. celery seed
3 tsp. prepared mustard
1/3 c. vinegar
1 c. Mazola oil

Mix all ingredients well in blender and store in refrigerator. This is the best sweet sour salad dressing I ever tasted.