I still don't understand the term. Do you mean passing the vessel holding the food upon request or in a circle in turn? Or do you mean offering the last piece of pizza round when you really really want it?
When I eat in this kind of scenario I get what I want when I want it. This is the done thing. In my social group passing food is only done by request. The host normally makes all dishes accessible by all, if not then you can request someone to pass you what you want more of. There is ALWAYS more than you want to eat. I don't eat in groups often. In a family scenario it is often the amount you want is already predetermined by habit so you get your food already on your plate. If you have a certain pallette (taste) then it is up to the host to ask and provide for this but it is also the onus of the guest to suggest any requirements too.
In a formal situation the host or the hosts help offers the food initially and you ask for what you want.
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The last thing I want to do is hurt you. But it's still on the list.