Spiced roast mackerel recipe

Ingredients

• 50g fresh turmeric, peeled and chopped
• 50g root ginger, peeled and chopped
• 4 garlic cloves, peeled and chopped
• 3 green chillies, deseeded, 2 chopped, plus 1 finely sliced, to serve
• 1 tsp ground coriander
• 4 tbsp groundnut oil, plus extra to drizzle
• 4 whole mackerel, gutted and de-headed, or 8 mackerel fillets, pin boned
• 2 onions, finely sliced
• 1 tbsp garam masala
• juice of 1 lemon
• 2 x 400g tins chickpeas, rinsed and drained
• ½ x 31g pack coriander, chopped
• 1 lemon cut into wedges, to serve
• ½ large cucumber, trimmed
• ½ x 28g pack mint, leaves picked and chopped
• 200g thick Greek yogurt