Boiling a can can absolutely open up a can. Pasteurizing happens below boiling point and for much shorter time, not enough time to change the pressure inside the can.
Boiling it for a long time can evaporate liquids and cause the pressure to build up and split a can open or warp it enough to open. It’s enough of a concern that condensed milk generally ships with a warning because of it.
Note that it won’t generally be the giant pop/explosion of cooking a can directly in flames.
In fact, cans of condensed milk specifically bursting when boiling was a big enough concern a few years ago because of a tiktok trend making caramel that way that there articles and videos of people fuckin it up
Boiling a can can absolutely open up a can. Pasteurizing happens below boiling point and for much shorter time, not enough time to change the pressure inside the can.
Boiling it for a long time can evaporate liquids and cause the pressure to build up and split a can open or warp it enough to open. It’s enough of a concern that condensed milk generally ships with a warning because of it.
Note that it won’t generally be the giant pop/explosion of cooking a can directly in flames.
In fact, cans of condensed milk specifically bursting when boiling was a big enough concern a few years ago because of a tiktok trend making caramel that way that there articles and videos of people fuckin it up
https://ca.sports.yahoo.com/style/why-cautious-making-caramel-canned-131502700.html