1, cowpeas without blanching direct frying is mostly poisonous, because cowpeas contain a toxic protein, if eaten raw will be poisonous, and blanching and then frying, after it is completely fried will be able to remove the poisonous substances inside, eat more safe and secure.

2, in addition, cowpeas after blanching in addition to removing the toxic substances inside, but also can maintain the color of cowpeas, but also to retain the cause of the substance inside, so that blanching is very necessary.