FROM COOKS MAGAZINE:Published July 1, 2002. WHY THIS RECIPE WORKS: The perfect buttermilk coleslaw recipe would produce a salad with crisp, evenly cut pieces of cabbage lightly coated with a flavorful buttermilk dressing that would cling to the cabbage instead of collecting in the bottom of the bowl. We found that salting and draining the cabbage removed excess water and wilted it to a pickle-crisp texture. For a dressing that was both hefty and tangy, we combined buttermilk, mayonnaise, and sour cream. If you are planning to serve the coleslaw immediately, rinse the salted cabbage in a large bowl of ice water, drain it in a colander, pick out any ice cubes, then pat the cabbage dry before dressing.