Preheat oven to 200°C/180°C fan forced. Tie drumsticks together with kitchen string. Place chicken in a large baking dish.
Combine oil, harissa paste and garlic in a bowl. Brush harissa mixture over the chicken. Cover loosely with foil and roast for 1 hour and 30 minutes.
Remove foil. Bake chicken for a further 45 minutes, brushing occasionally with remaining harissa mixture, or until golden brown and cooked through (juices run clear when tested with a skewer).
Remove chicken from oven and rest for 5 minutes.
Whisk yoghurt, onion, tahini paste, lemon juice, the water and coriander in a bowl. Season with salt.
Serve chicken with tahini yoghurt and lemon wedges.
Host a Roast
The power of a roast
This July, the humble roast is more powerful than ever before. For every Steggles Family Roast sold, 30 cents will go to support Australian children’s charities. So get on board and Host a Roast to help those in need.