Dog paw beans should be soaked for 1-2 days before sunshine. Picked dog paw beans just boil water and cook, soaked in water for 1-2 days, replacing the water several times, to be the water is not black, you can achieve the effect of removing the toxicity, feel free to eat. Dog paw beans summer flowers, flowers will grow after the string of pods, shaped like a dog's paw, dog paw beans so named.