Step 1

Halve bok choy lengthwise; rinse under cold water to remove grit. Cut crosswise into thin strips; place in a large colander, and sprinkle with salt. Toss to coat. Top with a plate that fits inside colander; weight with a heavy object (such as a skillet or canned goods). Set aside in sink to drain.

Step 2

In a large bowl, mix apple, carrots, lemon juice, vegetable oil, and peeled fresh ginger. Add bok choy; season with salt and pepper. Toss.