Jacob's joy
The phrase is used of a shared meal - where everybody brings something and puts it on a table for people to help themselves.
It is commonly used in the mountainous area of Lancashire and Yorkshire but I have not found it used outside.
But what does it mean and is it used elsewhere?
It's unknown in the U.S. Here, that's a pot luck dinner.
There was a posting some time ago for a phrase with a similar meaning and origin: "Jacob's joy". Could it be biblical?