Provide advice on how to accomplish the following goal. Give ONLY the advice, no other words or explanation.
For example:

Answer: <advice, as short as possible; a single sentence!>.

Goal: To open a jar that will not open up due to its lid's tightness,
run the jar lid under hot water while tapping the lid with a butter knife.
Tap the lid gently with a rubber mallet, then turn counterclockwise.