1. Weigh all ingredients in advance
2. Separate the egg white and the yolk, as long as the yolk
3. Add sugar, stir until the color becomes lighter and the sugar melts
4. Pour the milk into the pot and bring it to a boil
5. Add the beaten egg yolk
6. Stir constantly to avoid sticking the pot and out of the pot after boiling
7. Pour into a bowl, let it cool, add crushed Oreo cookies
8. Stir well
9. Pour into molds, put in the refrigerator, about 5 hours, ready to eat.
10. Super delicious
