1. Soak the fungus in warm water for about 30 minutes
2. Peeled and sliced yam
3. Put corn oil in non-stick pan and put yam
4. Stir-fry on low heat until slightly yellow
5. Add black fungus and stir fry a few times
6. Add the small red pepper segments and stir-fry the ingredients evenly
7. Pour half a rice bowl of pure water, cover the pot and cook for 5 minutes
8. Add salt and first soy sauce (light soy sauce), stir and stir well.
9. A dish in four colors, black, white, red, and green.
