Steps:
1. Wash a proper amount of rice and soak it in cold water for half an hour to make the rice grains swell.
2. Wash the crabs and remove their gills. Cut the crab into small pieces and marinate with cooking wine and ginger slices for a while.
3, prawns go to the shrimp intestines to go to the shrimp line, wash the cooking wine and marinate with white pepper for half an hour.
4. Put enough water into the pot, bring it to a boil, add the soaked rice grains, and bring it to a boil while stirring.
5. Then cover the pot cover, turn to low heat and put chopsticks between the pot cover and the edge of the pot to prevent water from overflowing.
6. Stir every few minutes when cooking porridge to prevent gelatinization at the bottom, and stirring can also make porridge more viscous.
7. Cook for about 1 hour, add crab, onion and ginger, and cook for another 8 minutes.
8. Pour in the shrimp and cook for five minutes.
9. Add some salt to taste and sprinkle with chopped green onion.