1 head cauliflower
1 head broccoli
1 med. purple onion, cut in circles
1/3 c. vinegar
1/3 c. sugar or 2 or 3 pkgs. Sweet & Low
2/3 c. mayonnaise

Cut flowers from cauliflower and broccoli and place in large bowl. Retain stems and steam and serve later. Cut onion in circles. Add to cauliflower and broccoli. Top with dressing made of vinegar, sugar and mayonnaise. Pour dressing over and let set overnight for best flavor. NOTE: Miracle Whip works well too.