How many times have you started making something, only to get stymied by the jar of salsa or other ingredient refusing to open?
Don't fight with it, making it worse. Here's my tip on opening reluctant jars. These are the kind of one piece lid, with a rubber gasket, such as those that hold salsa or spaghetti sauce. The trick is easy!
Run the hot tap over the jar lid. Do this for a minute or two.
Then, dry off the jar.
Hold it upside down, and bring it down firmly onto a folded towel on the counter.
Do not tilt it, hitting only one side. Make sure it's upright.
Then, it will open without the need of cursing, sore hands, or broken jars.
These lids have a rubber gasket on the inside of the lid, sealing out air. When you run it under hot water, the gasket will soften.
Firmly hitting the counter (cushioned by the folded towel) breaks the seal, making it possible to turn the lid. Even those of us with small hands will have no problem with it after it gets this treatment.
These jars and lids can be used again, but not for any kind of food that could spoil.
I use them once or twice for leftovers, or more permanently for dried staples. The lids will never seal properly again, so don't use these for canning or preserving.