I'm going to help a newer coworker learn parts of his job
Are you genuinely interested in helping him?
Yeah, I really like helping out the new people.
It is good to be friendly and teach new people how things work. In the future they may be able to help you out in return.
I believe I can help him be a better cook.
With your expertise and guidance you could definitely achieve that goal of making him a better cook. I feel he will really appreciate your help with all this.