Tools needed: hot water kettle, iron pot, bowl, hot water

1. Add water to the hot water kettle and boil it.

2. Prepare a deep plate and bowl that can be used to heat water.

3. Place the washed bowl into a deep plate.

4. Pour the milk into the bowl.

5. After the hot water boils, pour hot water along the edge of the plate. Be careful not to pour hot water into the bowl.

6. After pouring, leave it like this for about 5 minutes, and the milk will be hot.