@DavidBHimself is it possible that sharing to experience and sharing to replicate are two different kinds of sharing? And if so, that some cultures or individuals might offer one but not the other?
And could relative power dynamics come into play? If it's a relationship between French customers and refugee restauranteurs from a former colony, for example? Or between Israeli customers and Palestinian cooks?
What about consent? What if you asked for the recipe, and the restauranteur refused?