It's a challenge that everyone has faced at one time or another — a jar that refuses to open, no matter the amount of sheer force being used against it.
This life hack video could just turn everything around for you. No more sweating through getting jam on your toast or putting together an olive plate ... and all with something you probably have hanging around your house anyway.
So check out the video above to see Chef James make brilliant use of a tennis ball.
Do you have another trick for opening up a jar that won't budge? Let us know in the comments below!