I use the blunt end of a church key---a bottle opener. That's what it was designed for---to pop that air-tight seal. I have a variety of sizes since lids come in a variety of sizes. Some of mine are labeled Coors, Jax, Schlitz, Lone Star, etc.---dating from the days when beer cans did not have pop-tops or twist off caps. And of course, this kind of opener is still required to open a can of condensed milk, using the pointed end. Lacking a bottle opener, rubber kitchen dish-washing gloves are a handy alternative. They grip the lid tighter than the bare hand and have never failed me.
Why does hot water help to remove a metal lid from a glass jar?
I use the blunt end of a church key---a bottle opener. That's what it was designed for---to pop that air-tight seal. I have a variety of sizes since lids come in a variety of sizes. Some of mine are labeled Coors, Jax, Schlitz, Lone Star, etc.---dating from the days when beer cans did not have pop-tops or twist off caps. And of course, this kind of opener is still required to open a can of condensed milk, using the pointed end. Lacking a bottle opener, rubber kitchen dish-washing gloves are a handy alternative. They grip the lid tighter than the bare hand and have never failed me.