soak the chicken wings with a pinch of salt and clean water for 15 minutes. Transfer out and drain. You can let it drain naturally or absorb the water with kitchen paper.
Transfer chicken wings to a bowl, add white pepper, salt, ginger and scallion. Then message (or grasp is a more accurate words) for 3-4 minutes. This step is the key of removing odd taste.
Add a very small amount of oil in pan and fry chicken wings until slightly browned on both sides. Add scallion and ginger to fry until aroma. Transfer chicken wing to aside and fry the sugar over slow fire until bubbled. Mix well. This is the caramelization process which brings unique flavor for the chicken wings.
Pour hot water to almost cover the chicken wings. Simmer for 5 minutes. Then pick the ginger and scallion out. They have finished their job! Turn up fire and thicken the sauce until all the sauces are attached on the chicken wings. Move the chicken wings continuously to help thickening the sauce and avoid burning. Serve hot!