Cannot. Lard should not be stored for too long, especially in the high temperature summer is very easy to contact with the air and oxidation, resulting in rancidity and deterioration. Acid deterioration of the lard will produce a "halo flavor", should not be eaten. After 4 to 5 years, there is no guarantee that lard is not spoiled and should not be consumed. Lard should not be used for cold or fried foods. Food flavored with it should be eaten while hot, after cooling, there will be a kind of fishy smell, affecting people's appetite.