A loin of lamb is one of my favourite cuts, with absolutely no waste. Bring it to room temperature before cooking quickly in a frying pan or, even better, on the barbecue. This is a versatile cut, served here with char-grilled vegetables — or try the lamb sliced and tossed through a salad. It is even delicious in crunchy bread with a dollop of aioli and handful of rocket.
Combine the sumac, cumin, coriander, salt and pepper in a small bowl. Spread on a plate. Rub the loins all over with oil, then roll in the spices. Set aside while you make the salsa.
Chop the olives roughly. In a bowl combine them with the coriander, capers and lemon juice.
Heat a frying pan to a medium heat and fry the lamb for 3-4 minutes each side or until cooked to your liking. Leave to rest for a further 5 minutes, then slice thinly.