How to preserve beans for a long time? Specific steps are as follows
Long bean
Edible oil
salt
Pick out the broken beans, clean them, then add water in the pot, boil until bubbling, add a spoonful of salt, drop two drops of cooking oil, put the clean beans into the pot, blanch the water. Add salt and cooking oil to make blanched beans green without yellowing.
When the beans are in the pan, turn them with a slotted spoon to heat them evenly. Blanch for one minute, remove the beans after they have changed color. Don't cook too long, nutrients will be lost
This page is taken from experience without authorization
After the beans are all dried, take them off the drying rack, and then bundle them up one by one, pack them in a fresh-keeping bag, and store them in the cabinet