• 2kg leg of lamb – boned and butterflied

For the spice rub:

• 1 tbsp cumin seeds
• 1 tbsp coriander seeds
• 1 tsp black peppercorns
• 1 tbsp sweet paprika
• 1 tsp turmeric
• 1 tbsp rose harissa
• 1 pinch saffron
• 4 cloves garlic – finely chopped
• ½ bunch chopped parsley
• Zest and juice of 1 lemon
• 50ml olive oil

For the tahini sauce:

• 1 tbsp harissa
• 1 tsp ground cumin
• 1 clove garlic – peeled and finely chopped
• Handful fresh coriander leaves – roughly chopped
• 250g plain yoghurt
• 50g tahini paste
• Juice of 1 lemon
• 1 tsp sumac

Make the spice rub. Toast the cumin seeds, peppercorns and coriander seeds in a low oven until lightly toasted and fragrant. Grind in a spice grinder (or pestle and mortar) and mix with the remaining rub ingredients.

Spread the rub evenly over the entire surface of the butterflied lamb and rub in well. Cover loosely with cling film and leave to marinate for at least two hours, or overnight in the fridge if possible.

Preheat the barbecue until it’s nice and hot. If using charcoal, make sure you add plenty as it will be cooking for quite a while. When it is ready, add the lamb, fat-side down, and cook on a high heat for five to eight minutes until well browned. Turn over and brown the other side, for about the same amount of time.

Lift the grill to its highest setting (ie furthest away from the heat) if you can and move the coals to the sides of the barbecue to reduce the heat under the meat and cook more gently for 30 to 40 minutes, turning occasionally. (This will give you a medium rare to medium finish, cook for a little longer if you prefer your meat more well-cooked.) Remove the lamb to a large board and cover tightly with foil. Leave to rest for 10 to 15 minutes.

For the sauce, whisk the tahini, garlic, cumin, harissa and the coriander into the yogurt. Season with the lemon juice and a little salt, place in a dish and sprinkle the sumac over the top.

Cut the lamb into thick slices and serve with the sauce, falafels (see below) and a large salad.

Broad bean falafels

• 500g broad beans – picked
• 2 onions finely chopped
• 3 cloves garlic – finely chopped
• 1 tbsp cumin
• 1 tbsp coriander
• 1 tbsp garlic powder
• 1 tsp cayenne
• ½ bunch parsley – chopped
• ½ bunch coriander – chopped
• Zest of 1 lemon
• 1 egg
• Gram (or chickpea) flour
• Salt and fresh ground pepper

Heat a tablespoon of oil in a small pan. Fry the onion over a medium heat for three or four minutes until softened. Add the garlic and spices, fry for a further two minutes and remove from the heat.

Blitz the broad beans in a food processor. Add the sautéed onion, garlic and spice mix, then blitz together. Place in a large mixing bowl, add the mixed herbs, lemon zest and mix well. Taste and season with salt and pepper. Add the egg and mix together, rain in enough gram flour just to bring the mix together – don’t use too much flour or they will become too dry.

Chill the mix for about 30 minutes, then form into walnut-sized balls. Deep fry in hot oil (about 160°C) until crisp and golden. Drain on kitchen paper, season with sea salt and serve immediately.