1. Select cowpeas. This step is very important, use your hand to gently pinch the cowpea to feel firm, color pick fresh. Pick and wash well. Boil water in a pot, put the cleaned green cowpeas in whole and boil for about 1 minute. Remove from the water until the string beans are tender and brown. Hang them on a hanger or bamboo pole and let them dry in the sun.

2, in the preparation of the sun dried beans before the first attention to the weather forecast, must be the last 4 to 5 days are sunny, before you can prepare the sun dried beans. If the sun process encountered rainy days, it will affect the quality of the dry beans, and sometimes make the beans bad. In fact, when the sun is full of sunshine about 2 days after the sunshine, choose 4 to 5 days are sunny days are more safe.