Cut the sheep belly in large pieces.
Soak the head and belly in 2l water with 100ml vinegar for 2 hours.
Rinse and put in a large pot with the roughly chopped onions.
Cover with cold water. Start boiling on high setting.
Add salt, pepper and bay leaves.
Remove foam that forms on the water, reduce heat.
Boil for 2 hours, or until it starts to get tender.
Remove loose, small bones along with the skull and cheekbones.
Cut the skin and cheeks in smaller pieces and put back into the pot.
Heat oil in a pan and fry onion wedges until brown.
Add turmeric, curry and aniseed.
Fry for another minute and add chilli, vinegar and sugar.
Stir well and pour curry mix over the meat in the pot.
Add potatoes and cook for another 30 to 60 minutes until tender.
Add coriander or parsley.
If necessary, thicken the gravy with some flour mixed with water into a thick paste.