To speed up the vegetable prep, use the grating and slicing blades on a food processor for the Radishes, Carrots, and Cabbage, and the julienne cutter on a mandoline for the Kohlrabi.
In a small bowl whisk the vinegar, mustard, honey, cumin, 1/4 tsp. salt, and a pinch of pepper. Gradually whisk in the canola oil until combined.
Put the Radishes, Carrot, Kohlrabi, Cabbage, and Cilantro in a large bowl. Pour in the dressing and gently toss to combine. Season to taste with salt and pepper.