Make the mustard vinaigrette. In a small bowl, whisk together the Dijon mustard, lime juice, garlic, olive oil, and spices.
Make the salad. In a large mixing bowl, combine the cabbage, carrots, onions, red bell pepper, radishes, parsley and dill. Season with salt. Add the sumac. Add the toasted almonds. Toss gently to combine.
Pour the vinaigrette all over and toss to combine.
If you have the time, give the salad 30 minutes to 1 hour for the flavors to meld.
