Vinegar cloth is a cloth cooked with vinegar. When eating, as long as you put the "vinegar cloth" into the water, the vinegar smell inside will come out. This is a way to store vinegar. After all, cloth is far easier to carry than liquid vinegar.

In ancient times, the traffic was far behind now, especially when marching and fighting, it was not convenient to carry all kinds of spices. So I came up with the storage method of "vinegar cloth", which is convenient to carry and can meet people's requirements for food taste.

When eating, the soldiers only need to cut a small piece of cloth soaked in vinegar and cook it with military food. It won't be long before they can have a delicious meal.

Extended data

However, "salt cloth" is more common than "vinegar cloth". People can not eat wrong, but they must not eat salt. If people don't eat salt for a long time, they will have anorexia, nausea, vomiting, accelerated heart rate, weak pulse, muscle spasm, blurred vision, weakened reflex and other symptoms, and even cause death.

In this case, don't talk about going into battle to kill the enemy. I'm afraid it's very difficult to save your own life. Therefore, "salt cloth" is the essential seasoning of the ancients. In fact, the usage rate is much higher than that of "vinegar cloth".

Come to think of it carefully, whether it is "vinegar cloth" or "salt cloth", it is just a means of storing spices. This is the same as people drying dried salted fish, processing foods that are not easy to preserve in some way. It can be preserved for a long time, so that it can be taken out when needed, including pickled sauerkraut in the northeast and kimchi in Korea.