So, here's the basic idea: you're going to submerge a can of condensed milk in a pot of water, and then wait patiently for the magic to happen. That's right, folks, you're essentially going to slow-cook the condensed milk until it turns into caramel. It's like a science experiment, but with more sugar and less explosions (hopefully)!
The key is to keep the water level above the can, so the condensed milk is fully submerged. This will help the caramel cook evenly and prevent it from burning or sticking to the can. And don't worry, it won't take forever – just about 1-2 hours, depending on the size of your can and the temperature of your water.