The steps are as follows:

1. Roll all the Flammulina velutipes with fat beef slices in turn.

2. Bring the pan to high heat, then turn it back to medium heat, and fry the fat beef Flammulina velutipes roll directly in the pan.

3. Fry until the fat beef changes color, then turn to another turn, and fry the whole fat beef evenly until it changes color.

4. Put a tablespoon of oyster sauce in a bowl, add a teaspoon of white sugar, add water, and stir well with chopsticks.

5, hot pot, pour the evenly stirred oyster sauce on the pot, bring it to a boil over high fire, and then pour it directly on the fat cow Flammulina velutipes roll.