If you have begun to stew beans, beans appear to stew not rotten situation, you can put some baking soda in the pot to continue to stew, wait a while, beans can be stewed. In addition, the beans can be blanched, and then put into the pot for stewing, which is not only easy to cook, but also can shorten the stewing time. One more thing, use low heat to slowly stew beans, easy to rot and flavor.