This is, for me, hypothetical.
But, suppose you have someone in your life who's never (for one reason or another) eaten real food. Grew up eaten pizza and McDonalds and never really got over it.
The person sees your interest in food. He or she is interested in you. So he or she gets interested in food. They ask you to teach them. What would you do?
Note: Also see my related but more specific question in Not About Food.