The preserved fish and bacon are generally processed products made by the process of curing and then baking (or exposure to sunlight), so the moldy surface of preserved fish or bacon will produce harmful substances, so it can not be eaten.

As a meat product, bacon is not bad for a long time. After the winter solstice, the bacon made before the cold is preserved for the longest time and is not easy to change flavor. Bacon preserved at room temperature, the lunar calendar before March flavor is the most authentic time, as the temperature rises, bacon, although the meat quality remains unchanged, but the taste will become harsh throat. Therefore, after the third month of the lunar calendar, bacon can not be stored at room temperature. The best way to save is to wash the bacon, wrapped in plastic wrap, placed in the refrigerator freezer, so that it can be preserved for a long time, even if three years and five years will not change flavor.