A comforting, slow-cooked classic featuring tender cuts braised in a rich, velvety reduction with root vegetables and fresh herbs.
Simmer the lamb with the onion in the water for 60 minutes, skimming the surface, then strain and reserve 750ml of the broth.
Whisk the yogurt with the egg, cornflour, and reserved broth in a heavy pot until smooth.
Bring to a gentle boil over medium heat, stirring constantly to prevent curdling.
Add the lamb and simmer gently for 15 minutes.
Melt the butter, fry the black pepper in it, stir into the stew, season with salt, and serve hot with rice.