I don't want to tell religious relatives the ingredients of my tart.
That might be okay. Why don't you want to tell them the ingredients?
I'm tired of those fights. It's just curiosity what can they do? I'm not hurting anyone.
It is okay if you don't want to share your ingredients with your family even if it leads to fights. They will need to accept that you don't want to share.
Right. I just don't want to share it with them. What's wrong with not sharing.
There is nothing wrong with not sharing sometimes. Being forced to share your recipes is them not respecting your choice of not wanting to share something that belongs to you.