3 large potatoes, peeled, cut into large cubes and boiled until soft
2 red onions, cut into quarters and sliced
1 x 400ml/14fl oz tin coconut milk
1陆 tbsp plain flour
1 tsp black peppercorns, or more to taste
4 x 2.5cm/1in pieces cinnamon stick, discard tiny pieces that break off
10 cloves
salt
2 tbsp rapeseed oil or vegetable oil
1kg/2lb 4oz boneless lamb shoulder or mutton haunch, well cleaned of all skin, sinew, fat, gristle and cut into 1cm/陆in cubes