Rinse and chop ribs, then cook in cold water until frothy, then rinse. Peel the chestnuts.
Put the ribs, chestnuts into the rice cooker, add the post hou sauce, add a little soy sauce, a little salt (because the post hou sauce has a taste), a little sugar. Add cold water and soak the chestnuts in the ribs. Stir and cook until the water is almost dry. Turn off the cooker and let it simmer. And we're ready to go