1, three years. Unopened pepper loose powder shelf life is three years, after opening the shelf life of 12 months. Because it is easy to react with air contact after opening, it will cause the product to be more prone to deterioration, so it needs to be used up as soon as possible after opening.

2, pepper can be medicine, food dual-use, Chinese medicine, pepper has a warm stomach and cold function. Food method is mainly direct consumption of pepper, pepper and the world's major flavoring spices. Pepper is a common kitchen spices, kitchen spices preservation is very important, pepper needs to be placed in a dry place, avoid moisture, avoid direct sunlight, if the pepper is more, you can take a small portion of the daily use of most of the sealed preservation, can be stored longer.