1. In a bowl add cabbage and 1 tsp salt, let sit for about 15 minutes. Set aside.
2. In a bowl, add all the ingredient A and cabbage (drained well from #1) and knead the mixture with hand until it becomes pale in color and sticky.
3. Place a gyoza wrapper on a cooking board. Use a teaspoon to take a small amount of filling and put it in the center of the wrapper. Wet the edge of wrapper with fingertip. Make pleats on one side, then fold over and seal to close. Continue with the rest of the gyoza wrappers until you used all filling.
4. Heat 2 tbsp vegetable oil in a large frying pan over medium to high heat. Remove from the heat once to place gyoza, and cook them until golden brown and crispy on the bottom.
5. Pour boiled water (about 100ml), cover pan with the lid and let it steam over medium heat until all water evaporates. Repeat with the remaining gyoza.
6. For the dipping sauce, mix all the ingredient in a small bowl.
7. Place a plate on top of gyoza. Flip the pan upside down. Cook the remaining gyoza.
1 tbsp katakuriko/potato starch - dissolve in 2 tbsp water
1. In a medium cooking pot, add the all seasoning A ingredients and bring to a boil. Set aside. (not katakuriko/potato starch here yet.)
2. In a frying pan, heat 1 tbsp oil and add garlic and ginger, fry them until they are fragant. Add leek and shimeji (or the sliced button mushroom) and cook until they are tender. Sprinkle salt (1/3 tsp) and cook for a few seconds. Remove from the heat and let it to cool a bit, then add crab stick, mix well.
3. Beat eggs in a small bowl, and pour it over the vegetables to mix.
4. In a small cup, combine potato starch and water to mix. Bring again to a boil the soup which you made at step #1, and add potato starch mixture at the same time. Mix well to thicken sauce.
5. In a small fry pan, heat 1/2 tbsp oil (about), pour portion of the egg mixture and form a circular omelette using a spatula. Gently shake the fry pan to cook the egg mixture until desired consistency. Do not over cook. Cook halfway!
6. Place the egg over the steamed rice. Pour the thickened sauce on it.