Chicken and Broccoli

Name: Chicken and Broccoli
Ingredients: 1/3 c. plus 2 tablespoons low-sodium chicken broth; 3 tbsp. vegetable oil; 3 tbsp. oyster sauce; 2 tbsp. cornstarch; 1/4 tsp. kosher salt, plus more for blanching; 1/2 tsp. black pepper; 1 lb. boneless skinless chicken breasts, sliced into 1-inch pieces; 12 oz. broccoli florets; 3 tbsp. low-sodium soy sauce; 2 tbsp. dry sherry; 1 tsp. light brown sugar; 1 tsp. toasted sesame oil; 1 tsp. grated fresh ginger; 2 garlic cloves, finely chopped; 3 green onions, thinly sliced, white and green parts separated; Steamed rice, for serving