Preheat your oven to 200C.
Slice the potatoes into small, thin chips and chop cauliflower into strips or small florets. Place into a large baking tray with the garlic cloves.
Drizzle with olive oil and season well with the salt, pepper, paprika and crushed cumin seeds.
Place into the oven to roast for 25 minutes, then remove the garlic, add the mutton and return to the oven for a further 30 minutes.
Meanwhile, prepare the sauce. Add the yoghurt, feta, the roasted garlic, the juice of half a lemon, the herbs and plenty of seasoning to a blender. Whizz until you reach the desired consistency.
Heat the pitta bread in the oven briefly to allow them to puff up.
To build your kebabs, fill each pitta bread with generous spoonfuls of the mutton meat, roasted veg, pickles, kraut and sauce. Serve immediately.