Asian Noodle Soup with Chicken and Snow Peas

INGREDIENTS

• Coarse salt and ground pepper
• 8 ounces rice noodles
• 2 cans (14.5 ounces each) reduced-sodium chicken broth
• 1 piece fresh lemongrass (3 inches), smashed, or 3 sticks dried lemongrass
• 1 piece peeled fresh ginger (1 inch), cut into matchsticks
• 2 boneless, skinless chicken breast halves (6 to 8 ounces each), thinly sliced crosswise
• 8 ounces snow peas, trimmed and halved
• 2 tablespoons fresh lime juice, plus lime wedges for serving
• 1/4 cup fresh mint leaves
• Asian chile sauce (such as Sriracha), for serving (optional)