We should know that there are many kinds of bread. Bread with vegetables and meat is sold in the bakery for two days, and sometimes it is sold at a discount in the afternoon if it is not sold in the morning. Because many people like to take advantage, it is said that discounted sales can make their products sell faster. But for some whole wheat, barley and rye bread, it is different. This kind of bread can be kept for a long time, so you must pay attention when buying this kind of bread, because you may buy a very long time bread.
Some bakeries will adopt the method of "remelting and recycling" to re-make those expired breads. Once I went shopping with my friends late and happened to pass by a bakery. I saw that they had a lot of bread left, and I was curious about what they should do with it. Then I found that they didn't throw away the bread, but put it all in a machine. At that time, my friends and I were shocked because we never knew there was such an operation.
But in general, the bakery will not adopt this method, because it costs a lot of money to buy such a machine, and the expired bread is not very valuable, and the "remelted" bread tastes bad. So they will never buy this machine, and we can eat bread with confidence.