1 head green cabbage, finely shredded 2 large carrots, finely shredded ¾ cup best quality mayonnaise 2 tablespoons sour cream 2 tablespoons grated onion 2 tablespoons sugar, or to taste 2 tablespoons white vinegar 1 tablespoon dry mustard 2 teaspoons celery salt| Salt and freshly ground pepper Combine the shredded cabbage and carrots in a large bowl. Whisk together the mayonnaise, sour cream, onion, sugar, vinegar, mustard, celery salt, salt, and pepper in a medium bowl, and