Smashed curried marrow - Good Food Middle East

Ingredients

• 1 marrow, peeled and cut into large chunks
• 2 tbsp sunflower oil
• 2 tsp black mustard seeds
• 1 tsp cumin seed
• 1 large onion, finely sliced
• 2 garlic cloves, crushed
• ½ tsp turmeric
• ½ tsp chilli powder
• 1 tsp ground coriander
• juice ½ lemon
• small pack coriander, roughly chopped