Empire roast chicken

INGREDIENTS

• 1.4 kg higher-welfare chicken
• 1 heaped tablespoon garlic, finely grated
• 1 heaped tablespoon fresh ginger, finely grated
• 1 heaped tablespoon fresh red chilli, finely grated
• 1 heaped tablespoon tomato puree
• 1 heaped teaspoon ground coriander
• 1 heaped teaspoon turmeric
• 1 heaped teaspoon garam masala
• 1 heaped teaspoon ground cumin
• 2 heaped teaspoons natural yoghurt
• zest and juice of 1 lemon
• 2 level teaspoons sea salt
• 3 small red onions, peeled
• 1 stick cinnamon
• 10 cloves
• 3 tablespoons white wine vinegar
• 3 tablespoons Worcestershire sauce
• 3 level tablespoons plain flour
• 500 ml organic chicken stock
• fat-free natural yoghurt, to serve, optional
• 800 g new potatoes
• sea salt
• ground pepper
• 1 lemon
• 2-3 tablespoons olive oil
• 1 heaped teaspoon black mustard seeds
• 1 heaped teaspoon cumin seeds
• 1 bulb garlic
• 1 fresh red chilli, deseeded and finely sliced
• 2 tomatoes, roughly chopped
• 1 small bunch fresh coriander