Fruit Salad Dressing

This is from Prue-- I got it in 1982.

1/2 cup of sugar
1 tsp of mustard
1/4 tsp of salt
put into blender and mix
1/2 cup of saffola oil
1/3 cup of white wine vinegar or apple cider vinegar or 1/2 cup of lemon juice
1 tsp of celery seed
1 Tbls of grated onion
1 Tbls of poppy seeds
blend