Cook Egg Technique:
1. Use medium fire, boil eggs in water. Make sure eggs are completely covered in water.
Add some salt (to avoid egg crack with leaking egg white).
2. When water starts to boil (seeing little bubbles), count 4 minutes (or 3 mins if prefer softer yoke).
3. Remove eggs into another bowl of cold water. Knock and crack slightly the egg shells (to allow water to enter the shell, easier to peal later).
At Step 2) when water starts to boil, the egg white has been solidified. The next 4 minutes the egg yoke begins to solidify.