From "Cook's Country by America's Test Kitchen," episode 104, "Southern Regional Recipes." Specially designed to stand up to the strong smoky flavor of Lexington, NC barbecue.
Toss cabbage, carrot, onion and jalapeno pepper with salt. Let sit in a colander at least 1 hour to allow water to drain. Rinse off salt, then spin dry in a salad spinner. Transfer vegetables to a large bowl.
In a saucepan, combine sugar, sour cream, mayonnaise, mustard, chili sauce, vinegar and celery seed. Whisk constantly until it comes to a boil, then pour over cabbage. Toss well to coat vegetables with sauce. Cover with plastic wrap and refrigerate at least 1 hour before serving.