Ingredients

1 tablespoon finely grated peeled fresh ginger

1 tablespoon soy sauce

1 tablespoon rice-wine vinegar

1 1/2 teaspoons toasted sesame oil

2 tablespoons vegetable oil

1 celery stalk, cut into thin half-moons

2 garlic cloves, thinly sliced

8 ounces snow peas, trimmed

6 ounces shiitake mushrooms, stemmed, caps cut into thick strips

2 heads baby bok choy, cut lengthwise into 6 wedges

1 yellow bell pepper, cut into 1/4-inch-thick strips

3 scallions, cut into 2-inch matchsticks

2 ounces pea shoots (1 1/3 cups)

Coarse salt and freshly ground pepper

Sesame seeds, toasted, for garnish

Crushed red-pepper flakes, for garnish (optional)

Preparation

Stir together ginger, soy sauce, vinegar, and sesame oil in a bowl; set aside.

Heat 1 1/2 teaspoons vegetable oil in a wok or large skillet over medium-high heat until hot but not smoking. Add celery and garlic; cook, stirring constantly, until just tender, about 4 minutes. Transfer to a rimmed baking sheet; set aside.

Add 1 1/2 teaspoons vegetable oil to wok. Add snow peas and mushrooms; cook until tender, about 4 minutes. Transfer to the baking sheet; set aside.

Reduce heat to medium-low; add 1 1/2 teaspoons vegetable oil to wok. Add bok choy; cook, turning frequently, until tender, 6 to 8 minutes. Transfer to the baking sheet; set aside.

Raise heat to medium-high. Add remaining 1 1/2 teaspoons vegetable oil to wok. Add bell pepper, and cook until tender, about 2 minutes. Add reserved soy-sauce mixture, and cook until reduced by half, about 2 minutes. Add reserved cooked vegetables to wok, and cook, tossing frequently, until vegetables are heated through, about 3 minutes.

Remove wok from heat; toss in scallions and pea shoots. Season with salt and pepper. Sprinkle with sesame seeds, and with red-pepper flakes, if desired.