Classic mayonnaise-based coleslaw is bolstered here by the addition of mustard.
1⁄2 cup mayonnaise
1⁄4 cup prepared yellow mustard
1⁄4 cup apple cider vinegar
1⁄4 cup sugar
2 tsp. kosher salt
2 tsp. ground black pepper
1 tsp. celery seeds
1 medium head cabbage, shredded
Whisk together mayonnaise, mustard, vinegar, sugar, salt, pepper, and celery seeds in a bowl. Add cabbage and toss. Chill.
Source: Saveur on-line