Moroccan lamb chops with tahini and yoghurt

8 centre loin lamb chops

4 tsp roasted and freshly ground cumin or 2 tsp roast and freshly ground cumin and 2 tsp roast and freshly ground coriander seeds

flaky sea salt

freshly ground black pepper

3-6 tbsp extra virgin olive oil

1kg potatoes, cut into chunks

500g onion, sliced into thick rounds

8 whole garlic cloves

75ml tahini

75ml natural yoghurt

25g sesame seeds and sunflower seeds

sprigs of fresh mint and coriander, to serve