Take an egg and break it up, add warm water, the ratio of egg to water is about 1: 1.5, then add a little salt and stir well, filter the egg liquid for 2-3 times, and use a strainer to remove foam. Then cover or cover the stirred egg liquid with a layer of plastic wrap, boil the water and steam it for about 10 minute on medium fire. After cooking, add sesame oil, soy sauce and sprinkle with chopped green onion to taste better.