A feral it is the process of making moldy green beans edible. Rinse the beans in a ice cold water in a stainless steel bowl or ceramic mixing bowl or glass. Take it one bean at a time and carefully trim each bean. Have patience. Be in a relaxed state and enjoy yourself. You can talk to your children and invite them to help or listen to the radio or to your instructor as you do this. It shouldn't be considered a chore. Pretty soon you'll have a bunch of beans.