This is what I use & everyone seems to like it enough to ask for recipe.
Dice an onion and add 1 cup of sugar
Let set for 30 minutes
1 cup veg. Oil
½ cup cider vinegar
1/3 cup mayo
1 tsp. Salt
½ tsp. Celery seed
Shake in a jar and pour over 1-2 pkgs cole slaw & onion/sugar.