Add chopped lotus root, carrots, cornstarch, and all the other seasonings in a bowl. Continue stirring in one directly until the pork turns light in color and quite sticky in texture.
Transfer all the pork to a plate. A flat plate is preferred.
Flatten the meat cake. Dig a hole in the center and place the salted duck egg yolk or a fresh egg. I use fresh egg this time. Steam for around 15 minutes to 20 minutes depending on the thickness of your meat cake.
Transfer the mixture to steaming bowls. Flatten carefully.
Dig a small hole in the center to hold the yolk; Steam for around 15 to 20 minutes depending on the thickness of your meat cake.
Sprinkle some chopped green onion on top and serve hot.
Notes
The exact time needed for steaming depends on how thick your pork cake is. If you are using a deeper bowl, lengthen the time accordingly.