She was at Nieman Marcus for years and their restaurant was famous for this dressing. It is excellent with fruit salads.
1/1/2 cups sugar
2 teaspoons of dry mustard
2 teaspoons of salt
2/3 cup vinegar
3 tablespoons onion juice
2 cups of vegetable oil – not olive oil
3 tablespoons of poppy seeds
You’ll a blender, a processor or electric mixer
Combine the sugar, seasoning, vinegar, and onion juice, and beat for a few minutes. Gradually beat in the oil in a slow stream. When it is thickened, gradually beat in the poppy seeds and beat until well blended.