1Toss cabbage lightly with sugar, and carrots.
Sprinkle with salt,pepper and drench it all with the milk. Cover and refrigerate it about 15 minutes.
While this is chilling combine the mayonnaise, buttermilk.celery seed hot sauce and minced onions.
Mix well with cabbage mixture.
Refrigerate again at least an hour before serving.
Drain some of the dressing first and serve it separately at the table.
The coleslaw does settle quite a bit during refrigeration. Keeps 24 hours only. If it lasts that long. The technique is the secret along with the buttermilk and seasonings.