1. Heat up a pot of water. Place mustard green and lightly blanch. Remove and drain.
  2. Heat up oil in a pot. Sauté ginger.
  3. Add Chinese mushroom, mushroom, mustard green, black moss, carrot, gluten and stir-fry till fragrant.
  4. Add mushroom stock and water, stir-fry briefly. Cover with lid and simmer for 5 minutes.
  5. Remove the lid, add cornstarch mixture for thickening and serve.