Cut half a red cabbage into medium-thick shredded strips. Place in a large bowl. Add long-cut medium-thick strips of carrots. About 3:1 cabbage to carrots. Add 6 thinly sliced scallions, white ends with some of the green.
Add 1/2 cup + to taste Balsamic vinegar. Fini brand is great. Add 1 tbs. Dijon mustard. Season with celery salt and a generous amount of ground black pepper.
Toss thoroughly with 2 forks and serve at room temperature with your favorite grilled steak or burger.