Salad Dressing
["1 small onion", "1 c. oil", "1 c. sugar", "1 tsp. dry mustard", "1 tsp. salt", "1/2 c. vinegar", "1 tsp. celery seed"]
["Mix all ingredients at once in a blender."]
["onion", "oil", "sugar", "dry mustard", "salt", "vinegar", "celery"]