Add the shredded red cabbage and onion to a large bowl.
In a smaller bowl, whisk together the apple cider vinegar, Dijon mustard, sugar, olive oil, celery seed, caraway seed, salt, and pepper to create the dressing. Taste the dressing and decide if you'd like to add more sugar.
Add about half of the dressing to the cabbage and onions and gently toss. Slowly add more dressing until you’ve reached your desired consistency.
Allow to sit in the refrigerator for about 4 hours to soften cabbage and blend flavors.
Course: Side Dish, Sides
Cuisine: American
Keyword: coleslaw, picnic food, potluck, side, side dish