Separate the egg yolk from the egg white, add a small amount of sesame oil to the egg yolk, stir well and add 50 ml of water to break the egg yolk. Rub a thin layer of sesame oil on the egg steamer, filter the broken yolk into the egg steamer with a strainer, remove a small amount of foam, dig out the foam in the egg liquid with a spoon and heat it in a vessel.