Stir-Fried Tofu with Mushrooms and Greens

INGREDIENTS

• 1 cup low-sodium vegetable or chicken broth
• 2 Tbs. low-sodium soy sauce
• 1 Tbs. cornstarch
• 1 Tbs. red wine vinegar
• 1 Tbs. Asian sesame oil
• 3/4 tsp. freshly ground pepper
• 1/2 tsp. Asian chili sauce, such as sambal oelek
• 1/2 tsp. sugar
• 1 Tbs. vegetable oil
• 1/4 cup minced green onions
• 2 Tbs. peeled and minced fresh ginger
• 1/4 lb. fresh shiitake mushrooms, stemmed and sliced
• 1 large bunch broccoli rabe, cut into 1 1/2-inch lengths
• About 1 lb. firm tofu, drained, patted dry and cut into 3/4-inch cubes
• Coarse kosher salt, to taste
• Steamed brown jasmine or basmati rice for serving