1. Pour the big sauce and hot sauce into the rice washing water, and sieve them through.
2. Put clams in 1 cup of water and cook until clams open their mouths, then dig out the meat. Pour the soup into the rice washing water after settling the sand.
3. Wash the shepherd's purse and boil the soup.
4. Boil for a while, put on the prepared garlic and onion, and cook again.