Step 1

Mix the marinade ingredients in a large bowl. Add the lamb, turn in the mixture, cover and marinate for at least an hour, or overnight.

Step 2

Preheat the oven to 180ºC, gas mark 4. Transfer the lamb and its marinade to a large, deep roasting tin. Pour in the wine and stock, put on the hob and bring to the boil. Cover the tin with foil and bake for 3½ hours, basting hourly. Remove the foil and return to the oven for 30 minutes.

Step 3

Put the couscous, cinnamon, harissa, oil, orange juice, 300ml boiling water and a pinch of salt in a bowl. Stir, cover and set aside for 10 minutes. Then, cook the beans in a pan of water for 3-4 minutes, or until tender.

Step 4

Fluff up the couscous and mix in the mint and pistachios. Spoon onto a platter with the beans and cherries.

Step 5

Rest the lamb on a board. Tip the cooking juices into a jug, skimming off any oil. Simmer the juices in a pan for 15-20 minutes. Stir in the honey. Season. Add the lamb and couscous to the platter. Drizzle with some juices; pour the rest into a jug. Sprinkle with rose petals. Serve with extra harissa.