1． Beat an egg in a bowl and beat it thoroughly, then pour in half a bag of pure milk (steaming with milk will make it more tender and nutritious. You can also use water, the ratio of water to eggs is about 1.5:1).

2． Pour cold water into the iron pot and cover it to 3/4 of the bowl (to prevent it from overflowing into the bowl when the water boils).

3． Okay, turn on the fire!

4． Look at the watch, wait five minutes (up to six minutes, don’t time out), and turn off the heat!

5. Let it sit in the pot for 3-5 minutes (the resting time should not be too long, otherwise it will be too old), let the residual heat of the water scald it, and then take it out.

6． The custard steamed in this way is tasteless. If you want it sweet, add sugar to the milk and pour it into the beaten egg liquid. If you want something salty, pour some oyster sauce on the steamed egg custard, which is both flavorful and nutritious. According to my experience, most children prefer to eat food with oyster sauce.