3 tablespoons prepared white horseradish |
2 tablespoons plus 1 teaspoon balsamic vinegar |
2 1/4 teaspoons dijon mustard |
6 tablespoons olive oil |
4 cups finely shredded red cabbage |
6 ounces thinly sliced roast beef, cut crosswise into strips |
1 cup coarsely grated peeled celery root (celeriac) |
1/2 cup thinly sliced red onion |
1/2 cup crumbled roquefort cheese |
chopped fresh parsley |