Why You Would Throw Soy Beans at an One?

Dry beans can have high levels of toxins in them if you do not boil them before eating them. Soy beans were thought to be especially effective weapons against ony demons, somewhat like garlic is believed to be powerful against vampires in the west. Soi beans, or dada, literally, the big bean, were considered particularly powerful because they were believed to contain the spirits of all the cereals combined.