Salmon with Black Bean Sauce

Name: Salmon with Black Bean Sauce
Ingredients: 2 tablespoons fermented black beans, rinsed, drained, and chopped; Four 6- to 7-ounce skinless pieces center-cut salmon fillet; 2 tablespoons plus 2 teaspoons vegetable oil; 1 tablespoon finely grated fresh ginger (use a Microplane); 1 garlic clove, minced (about 1 teaspoon); 2/3 cup canned low-sodium chicken broth or Chicken Stock; 1 1/2 tablespoons rice wine or dry sherry; 1 tablespoon cornstarch; 1 teaspoon sugar; 4 scallions, white and green parts, thinly sliced (about 1/2 cup)