First of all, wash the beans, soak in cold water for a few hours beans slightly swollen, drain the water with a sieve. Again soak the beans in cold water, the second soak time to be shorter, look a little bloated can be drained. Waiting to dry the skin moisture can be fried with green sand, no green sand with table salt is also OK. There is no added anything, and not as crispy as those sold in the market, but the broad beans are cracked. Fried fava beans practice: take 1.5-2 pounds of bean Xin crisp with cool water to dissolve and add 250 pounds of cool water and stir, then add 100 pounds of fava beans and stir again. Rest soak 2-5 days (about 2 days in summer, 3-4 days in spring and fall, 5 days in winter). Fish out into the 0.5% citric acid solution soaked for 2-5 seconds (fava beans do not blacken can omit this step), and then fish out, wash, dry the surface water, into the pan fried until golden and crispy can be.