Buy a leg of a size that will fit in the crockpot.
Spend some time and cut off ALL the fat that you can (not good, all that fat). Insert 2 cloves of garlic into the meat. sprinkle with salt and rosemary.
Heat the oil in a frypan, Coat the Liver in the flour and fry till sealed. Transfer to the slow cooker. Add the onions to the pan and fry until golden. Stir in the remaining flour and stock. Bring to the MORE
Partially cook the shanks, I place them in a roasting tray and cover with foil for about 30min @ 180degC
Put them into the slow cooker along with an juices in the roasting pan, and cover with equal MORE