Principle of white vinegar soaking bacon: Because the content of sodium ions in salted bacon is very high, soaking bacon in water can make sodium ions in bacon flow out until sodium ions in bacon and sodium ions in water reach a balance, which can effectively reduce sodium ions in bacon, while white vinegar can dilute the salty taste, so soaking bacon in warm water with white vinegar is the most practical and simple method. And if our dried bacon is put into the air all the time, the water in the bacon will be lost, and slowly, the bacon will become salty.