Ingredients

• 4 chicken breasts (skinned, boned, cut into 1-inch pieces)
• 1/4 cup cornstarch
• vegetable oil
• 1 can chicken broth (10 3/4-oz can )
• 1/8 teaspoon garlic powder
• 1 ripe tomato (large, cut into chunks)
• 1/3 cup water chestnuts (sliced)
• 1 can sliced mushrooms (4-oz can, drained)
• 1 cup green onion (coarsely chopped)
• 1 cup celery (slant-sliced )
• 1/4 cup soy sauce
• 1 cup Lettuce (finely shredded, optional)
• rice