How to Make It
In a small bowl, soak the raisins in hot water for 10 minutes. Drain, pressing out any liquid.
Meanwhile, in a large bowl, whisk the red wine vinegar with the whole-grain mustard and sugar. Whisk in the grapeseed and walnut oils and season the dressing with salt and pepper. Add the shredded cabbage, carrot, onion, chives and raisins and toss the salad well. Season with salt and pepper and toss the salad again. Refrigerate until chilled, about 10 minutes. Transfer to a medium bowl and serve.