Glazed Tofu With Bok Choy

Name: Glazed Tofu With Bok Choy
Ingredients: 2 tablespoons canola oil; 2 heads bok choy, cleaned and cut into 1-inch pieces (about 6 cups); 3 garlic cloves (1 thinly sliced, 2 minced); 1 14-ounce can vegetable broth; 1 1-inch piece fresh ginger, peeled and grated; 2 teaspoons fish sauce or tamari; 1/4 cup soy sauce; 4 teaspoons dark brown sugar; 2 teaspoons toasted sesame oil; 1 14-ounce package firm tofu, cut into 1/2-inch-thick slices and drained on paper towels; 2 tablespoons cornstarch