Soak dried mushrooms in water (10 minutes).
Chop onions and thinly slice shallots in half moons.
Fry shallots with 1 tbsp oil until golden (about 3 minutes). Add onions and cook for another 3 minutes.
Add meat, veggie seasoning, fish sauce. Cook through, breaking up large chunks of meat (about 8 minutes).
Add drained mushrooms and pepper. Cook for another 2 minutes.
Combine cornstarch, chicken broth, water, salt slowly in large pot. Turn on heat to medium and cook while mixing continuously until smooth and thick (about 8 minutes).
Assemble: oil, bottom batter layer, meat, dollop of batter on top. Fold and close foil packet.
Steam assembled foil packets for 10 minutes and allow to cool.