Mackerel with date, aubergine & preserved lemon relish - Good Food Middle East

Ingredients

• ½ tbsp cumin seeds
• ½ tbsp coriander seeds
• 8 mackerel fillets
• ½ lemon, juiced
• 2 aubergines (about 550g)
• 2 tbsp olive oil, plus extra for frying
• 1 small onion, finely chopped
• 2 plum tomatoes, finely chopped
• 2 garlic cloves, crushed
• 1 red chilli, deseeded and chopped
• 2 tsp ground cumin
• ½ tsp ground ginger
• 1 tbsp runny honey
• 1 preserved lemon, plus 4 tsp juice from the jar
• 8 dates, stoned and finely chopped
• 8 mint sprigs, leaves torn
• couscous or bulgur wheat and coriander sprigs, to serve (optional)