Ingredients

4 whole boneless skinless chicken breasts (4 pounds)

Lemongrass Marinade

2 teaspoons coarse salt, plus more for seasoning and cooking water

1/2 teaspoon freshly ground pepper, plus more for seasoning

1 pound sugar snap peas, strings removed

2 shallots, roughly chopped

1 inch piece ginger, roughly chopped

1/2 cup freshly squeezed lime juice

3/4 cup fresh mint

3/4 cup fresh cilantro

6 tablespoons canola oil

1 head romaine lettuce, chopped into pieces

2 mangoes, peeled, pitted, and cut into 1/2-inch dice

3 red bell peppers, cored, seeded, and cut into 1-inch-long matchsticks

1 fennel bulb, trimmed, cored, and cut into 1/4-inch dice

6 scallions, thinly sliced, white and pale-green parts only

Preparation

Place chicken between sheets of plastic wrap; pound to 1/2-inch thickness. Place in a plastic or glass dish; coat with marinade. Cover; chill 4 hours or overnight.

Heat grill or broiler. Season chicken with salt and pepper; grill until golden brown and cooked through, 4 to 5 minutes per side. Set aside to cool.

Fill a large bowl with ice and water; set aside. Bring a large saucepot of water to a boil; add salt. Add snap peas; cook until bright green and still crisp, about 2 minutes. Transfer to ice bath to cool. Drain; cut into 3/4-inch pieces.

Place shallots and ginger in a food processor; process until very finely chopped. Add lime juice, 1/2 cup mint, 1/2 cup cilantro, the salt, and pepper; process until herbs are finely chopped. Slowly add oil through feed tube with motor running.

Layer romaine, mangoes, chicken, red pepper, fennel, snap peas, and scallions in a large bowl. Top with remaining mint and cilantro. Serve with dressing on the side or add dressing to bowl.