For spicy chicken with rosemary & ginger,
heat the 2 tablespoons oil with a knob of butter in the base of a tagine or a large, heavy-based saucepan over a medium heat, stir in the 1 finely chopped onion, 40 g fresh root ginger, peeled and finely chopped and 1 tablespoon finely chopped rosemary and cook for 3 minutes to allow the flavours to mingle. Add 8 skinless chicken thighs and stir to coat well, then stir in 1 teaspoon harissa paste and pour in 600 ml water. Bring to the boil, then reduce the heat, cover and cook gently for 1 hour. Season with salt and pepper and serve with couscous.