The country food-sour beans, which is simple to make and delicious, is very delicious. Material water production, 4 degrees warm water, add salt. (Proportion: 2 liters of water, 2 grams of salt). Put the jar beans in a glass container (a crock is ok, but don't use a plastic container). Add pepper, garlic and ginger to the water. Sealed and stored in a cool place for a week, you can take it out and eat it. Cut the soaked jar beans into cubes and stir-fry them with some meat foam. The taste is very refreshing, sour and very delicious. It can be stored for a month. Pregnant women like these dishes very much. You can try them. It's simple.