1/2 c. vinegar
1 tbsp. onion
2 tsp. sugar
2 tsp. salt
1/4 tsp. pepper
1/2 tsp. paprika
1 tsp. mustard with horseradish or 1/2 tsp. dry mustard and 1/2 tsp. horseradish
1 c. salad oil

Combine all ingredients except oil in a blender. Blend until onion is finely chopped. Slowly add oil and blend until well mixed.