Cabbage Salad Dressing
["1 medium onion", "1/2 c. vinegar", "1 c. sugar", "1 c. oil", "1 tsp. salt", "1 tsp. celery seed"]
["Combine onion and vinegar in blender.", "Add sugar.", "Let stand 20 minutes.", "Add oil, salt and celery seed.", "Keeps weeks in refrigerator."]
["onion", "vinegar", "sugar", "oil", "salt", "celery"]