If the color, smell and taste of the food have not changed, it can be eaten for a while.
The shelf life can be understood as the final edible period. After this period, all the indicators of food may not meet the product standards, or even moldy and deteriorated, and it is no longer suitable for eating.
I learned about this on TV before, and then I went to the supermarket to have a closer look. There are really two kinds of shelf life of food. Of course, expired food is best not suitable for eating.
I hope it helps you.