Thinly slice mushrooms. Slice meat and tofu into 1 1/2-inch strips about ... a boil. Add cornstarch paste to thicken soup. Remove ... added with the meat.
Bring broth to a boil ... sauce, salt and tofu. Bring to a boil again. Mix vinegar, pepper, cornstarch and water and stir until ... Garnish with chopped scallion.