1. Wash the asparagus, and wash the shrimp skin with water
2. Beat the eggs in a bowl, add salt and cooking wine and stir well
3. Asparagus slices and shrimp skins are put into the egg mixture, add 1.5 times the water of the egg mixture and a little lard, and skim the scum
4. Put water in the pot to boil, put the bowl in boiling water, cover the bowl with a plate, and cover the pot and steam for 8-10 minutes
5. The steamed custard is tender and tastes good
