1 head green cabbage, finely shredded

*optional finely shredded carrots

*optional finely shredded broccoli stems

*optional finely shredded cauliflower stems

3/4 cup mayonnaise

2 tablespoons sour cream

2 tablespoons grated Spanish onion

2 tablespoons white vinegar

1 tablespoon dry mustard

2 teaspoons celery salt

Salt and freshly ground pepper