Tofu isn't just for vegetarians. It offers soy protein, which can reduce the unhealthy LDL cholesterol. Tofu can be mixed with just about anything to take on a variety of flavors.
Bring broth to a boil in covered 2-quart saucepan; add mushroom slices, tofu, and bamboo shoots. Return to a boil; cook, uncovered, 5 minutes.
Remove from heat; stir in the fish sauce and remaining ingredients.