Cans are essential in the pantry, their first asset being of course their long shelf life. When they are stored in a cool, dry place away from light, they can be kept for several months or even several years without any problem. But here it is: once opened, the can will not last long.
Contrary to what one might think, it is totally inadvisable to put it in the refrigerator. This could indeed give a ferrous taste to the food, as the metal in the can can be dissolved by the oxygen in the air. Instead, it is recommended that you pour the contents of the can into an airtight glass or plastic container, then keep it in the refrigerator.
Your food must then be consumed within three to seven days after opening. For your cans that are still closed, you only need to consult the date of minimum durability indicated.
Practical and economical, tin cans are however fragile and should not be consumed if: