Celery Seed Dressing - cooking recipe

Ingredients

1/2 c. sugar
1 tsp. mustard
1 tsp. salt
2 tsp. celery seed
2 tsp. grated onion
1/3 c. vinegar
2 tsp. horseradish
1 c. salad oil

Preparation

Combine all ingredients except oil and 1/2 vinegar.
Mix at high speed in blender.
Add oil slowly, then vinegar slowly. Chill.