This is the 634th most frequent Polish word.
najlepiej
"Najlepiej" means "the best" or "ideally" in English.
In this sentence, 'najlepiej' is used to ask about the optimal method or manner of doing something.
Czy wiesz, jak najlepiej przyrządzić tę potrawę?
Do you know the best way to prepare this dish?
'Najlepiej' here indicates a state of feeling or condition that is superior or most favorable to the subject.
On czuje się najlepiej, kiedy jest z rodziną.
He feels the best when he is with his family.
Here, 'najlepiej' serves as an adverb describing the optimal choice or best recommendation for an action.