It sounds very like the old haybox - boil up stew, vover and put into a box of hay to cook all day.
Also very like the way my mother and grandmother cooked ham when the electricity meter gobbled shillings as though they were sweeties - put ham into the copper with an onion or two and some peppercorns, cover with water and boil up, then turn off heat and cover the copper with all the old blankets, coats and eiderdowns in the house and leave overnight. They did have to clean out the copper thoroughly first, or the ham had a faint taste of soap.
Terrible relationship with DIL - am I the problem?
Mandelson failed security vetting. Starmer says he didn’t know
soup made with the ham bone stock, leeks a couple of carrots and red lentils! Serve with homemade crusty bread (sourdough is good) and lashings of good Welsh salted butter.
?