This is the recipe I have for KFC coleslaw. If it isn't the same it sure does taste like it. I really like it.

8 cups finely chopped cabbage
1/4 cup shredded carrots
1/3 cup sugar
1/2 tsp. salt
1/8 tsp. black pepper
1/4 cup milk
1/2 cup mayonaise
1/4 cup buttermilk
1 1/2 tbsp. white vinegar
2 1/2 tbsp. lemon juice

Cut cabbage and carrots into small pieces about the size of rice kernels. Use food processor to chop if wanted fine. In salad bowl, combine the sugar, salt, pepper, milk, mayo buttermilk, vinegar and lemon juice.Beat until smooth. Add the cabbage and carrots. Mix well. Cover and refrigerate.

(I have tried this and it is even better the second day)