6 cups very thinly sliced bok choy, (about a 1-pound head, trimmed)
2 medium carrots, shredded
2 scallions, thinly sliced
PREPARATION
1. Whisk vinegar, oil, sugar, mustard and salt in a large bowl until the sugar dissolves. Add bok choy, carrots and scallions; toss to coat with the dressing.