Pulled chicken from the Big Green Egg with roasted potatoes

Ingredients

• 1 free-range chicken
• 2 olive oil
• 8 coriander leaves
• 30 g unground vadouvan
• 10 g white peppercorns
• 5 g cumin seeds
• 30 g Indian curry powder
• 20 g smoked paprika powder (sweet)
• 10 g ground ginger
• 5 g mustard powder
• 5 g ground nutmeg
• 5 g garlic granulate
• 20 g celery salt
• 30 g dark brown caster sugar
• 4 floury potatoes
• 1 clove of garlic
• 2 sprigs of coriander
• 10 chive stalks
• 6 tablespoons Greek Yoghurt (5% fat)
• 2 tsp harissa