2/3 c. sugar
1/2 tsp. grated onion
1 c. vegetable oil
1/2 tsp. celery seed
1/2 tsp. salt
1 tsp. dry mustard
5 tbsp. white vinegar
1 1/2 tsp. lemon juice

Combine sugar, mustard, salt, onion and 2 tablespoons vinegar. Mix well with blender. Add oil very slowly, beating constantly. This will become very thick. Add remaining vinegar and lemon juice. Continue beating until thick. Stir in celery seed. Store in refrigerator, covered.