Unfortunately, beans must be soaked in water before being cooked. Usually, the preparation time for the soup is about one hour. After leaving the beans soaking overnight, rinse the beans thoroughly to remove any debris from them, such as rocks or sand. Note: cover the beans with plenty of water, as they are likely to absorb all of it. Add beans to a large pot and add water. Cook the soaked white beans in boiling water for about 30 minutes and test for consistency. Ideally, the water level should be three inches above the beans. There is no need to overcook the beans as they will continue their cooking process with the soup.