1, mash the egg yolk, break it as much as possible, and the more broken it is, the better.

2. Put the broken egg yolk into the pot and stir fry. If you are patient, you can use a small fire (about half an hour). If you are impatient, you can use a small fire (fifteen minutes). You can't use a big fire, or the oil will dry directly.

3. Continue frying and observe the change of yolk state. The yolk will change from golden to brown at first, and then to black.

4. When the yolk turns black and smoke comes out, it means that the egg butter is coming out soon. If you continue to fry for a while, you will see some oil coming out.

5. But it's not finished yet. Now it's just oil, and then continue to fry it and continue to oil. Oil can wrap egg yolk.

6. Separate the yolk from the oil. Only one egg is used here, and there is too little oil.

7. No need to filter, or there is no oil. Just remove the yolk residue with a spoon.

8. Pour the oil directly into the container.