MonoMonday: Secret Weapon!

Many thanks to Carolina who's hosting MonoMonday this month.

Today's challenge is "Secret Weapon".

My Editor often has difficulty opening tightly closed jars. Usually she passes them to me and normally I can manage. But if I'm not there she gets out our secret weapon, which works wonders.

(Don't tell her, but I have to admit that occasionally I have to use it, but I try to keep my use of it secret as we men don't like to fail at such tasks!)