Superlicious Smooth Chicken 当归杞子滑鸡

I prepared this dish when my family came to visit me. Very suitable for the whole family, the chicken meat is so tender and the gravy is so fragrant.
ingredients:

1 whole chicken (about 1.6kg)
1 piece 1 inch ginger (smashed)
A handful of 玉竹 or Yuk Juk (Solomonseal Rhizome)
1 tsp salt
Water
Ice water

1. Wash chicken with salt, rubbed the body of the chicken and wash off with running water.
2. Put chicken, ginger, salt and Yuk Juk into a big pot, pour water until the water cover the whole chicken.
3. Put pot on the stove with the smallest heat to let the chicken to cook slowly for 45 minutes or 1 hour depend on the size of the chicken.
4. The water won't be boil, maybe in a very small simmer. Turn the chicken to other side by half an hour later.
5. Before reach 45 minutes, prepare a big pot of ice water with ice cubes for cold bath.
6. After 45 minutes, take a skewer and insert into chicken breast & tights to check if the chicken is cook. Take out chicken and place it in the ice water and let soak for 15 minutes.
7. Cut chicken into chunks and place it into a deep plate. Set a side.
8. Bring to boil for the remaining water (this is my chicken soup). Add salt to taste.

for the gravy:

3 pcs 当归 or Dong Gui (Angelica sinensis)
A handful of 杞子 or Gei Ji (Wolfberry) soak in water
2 cups chicken soup
1/2 tsp chicken stock powder
1 tbsp oyster sauce
1 tsp rock sugar
2 tsp light soy sauce
1/2 tsp salt
1 tbsp cornstarch
1 tbsp Shaoxing Wine 绍兴酒

1. In a bowl, put cornstarch & water and mixed well. 
2. On a pan, take out 2 cups of the chicken soup and add in Dong Gui, Gei Ji, chicken stock powder, oyster sauce, light soy & salt. Bring to boil.
3. Add in slowly the cornstarch water, stir well. Lastly, in high heat add in Shaoxing Wine.
4. Pour the hot gravy onto the chicken and serve!