Crack the eggs into a bowl and beat well.
Add milk to the eggs and mix together.
Stir in salt and cooking wine thoroughly.
Strain the mixture through a sieve for a smoother texture.
Pour the egg mixture into a heat-resistant dish.
Bring water to a boil in a steamer.
Place the dish in the steamer and steam over low heat for 10 minutes.
Top with chopped green onions if desired.