Take egg out of the refrigerator and return to room temperature. Place about 1L of water and 1/2 tsp Salt in a pan, and put it on the fire.
When it boils, put the egg on the spoon, and gently put into it in the pan.
Boil the egg for 8 minuets. If it boils again, weaken the fire. After that, cool the Egg with cold water.(If you like more soft York Egg, boil the egg for 6-7 minuets)
Peel the Egg shell. Cover the egg with paper towel and wrap.
Add the seasoning Soy Sauce and tie the wrap. Keep it in fridge over 10 hours.
Seasoning Soy Sauce - High recommend this soy soy sauce which is named Yamasa Konbutsuyu - SG$7~9/L at Dondon Donki, Mid Town Mart etc
