Strictly speaking, once the shelf life of any food has passed, in principle, it cannot be eaten again.

Generally speaking, the shelf life is calculated in days (days). It actually refers to the period of normal storage without deterioration when the packaging is intact under normal circumstances (that is, the natural environment at that time). Obviously, spring Summer is shorter and autumn and winter are longer. However, when the environment is harsh and the temperature is abnormal, the shelf life will be shortened. It is only an approximate value. When it is well sealed and frozen, it can still be eaten after 1 to 2 days of expiration. The shelf life of rusk is longer than Ordinary bread lasts a long time and is more tolerant of sensitivity to expiration.

If not stored properly, even within the shelf life, bread may still become moldy and go bad. Therefore, the main thing is to look at the condition of the bread itself. Be sure to carefully identify it before eating. If there are any abnormalities in sensory properties, do not use it again. For eating, it is still beneficial to heat it in the microwave before making sure it is edible (heating to soften and sterilize).

If you find that the sensory properties of the bread are abnormal or you suspect that there is a problem with the quality of the bread, it is best not to eat it.

When mold grows on the surface of bread, the entire bread is actually in a state of spoilage from the inside to the outside. It’s just that the mold appears on the surface first. Even if part of the bread is cut off, the rest will still be contaminated by the mold. , can also cause food poisoning.

Note when saving: If the interval is not long and the room temperature is not very harsh, it does not matter if you leave it overnight for a few hours (the packaging must be intact). If the interval is long, it is still urgent. It is better to freeze the bread. Refrigeration will accelerate the aging of the bread, make it taste bad, and may cause odor transfer or moisture absorption and gelatinization. Anyway, it is best to heat it before eating. Freezing is more suitable.