1. Boiled egg custard only needs to be cooked for 10 minutes.

2. Ingredients for egg custard: eggs, cold water, sesame oil, salt, cooking wine, balsamic vinegar, and light soy sauce. Beat the eggs, add salt and a few drops of cooking wine and mix well, then pour in cold boiled water and mix well. Strain through a fine mesh to remove impurities and foam. Pour the filtered egg liquid into the steaming bowl. Wrap the steaming bowl with high-temperature plastic wrap or cover it with a lid, and place it in the steamer. Turn to medium-low heat and steam for 10 minutes, then turn off the heat and simmer briefly. Drizzle with sauce before eating.