I mentioned in replies that as a member of the Palestinian diaspora, I make our food for friends and colleagues when they come to my house, but I don't normally give out family recipes. Those are for my kids, niblings, and future generations.
I recognise that this is different than running a restaurant. And that not all diaspora cultures hold onto recipes this way. Palestinian food culture has been particularly plundered in a conscious campaign of erasure, so it's a very sensitive one.