Lamb tagine with dried fruit

Ingredients

• 2 tbsp olive oil
• 1 lb lean boneless lamb ((such as leg), cubed)
• 1 onion (chopped)
• 1⁄4 tsp saffron threads
• 2 cups diluted salt-reduced or homemade vegetable stock (hot)
• 1 tbsp tomato paste
• 1 orange (zest cut into strips)
• 1⁄4 tsp ground ginger
• 1 tsp ground cinnamon
• 1⁄2 tsp ground coriander
• 1/2 tsp harissa (or to taste)
• 1 tbsp honey
• 16 pickling onions (or small shallots, peeled)
• 2/3 cup dried dates (pitted)
• 1 cup dried apricots
• 2 398ml cans chickpeas (drained and rinsed)
• 2 tbsp walnuts (chopped)