Cod and prawn tagine with olives and lemon recipe

Ingredients

• 2 fillets of line caught cod, filleted and pin-boned and cut into large chunks
• 2 inches fresh ginger root peeled and crushed
• 1 clove garlic peeled and crushed
• 1 small onion finely chopped
• 1 lemon, juice only
• 1 carrot peeled and sliced
• 1 potato, peeled and boiled until soft
• 30 cold water peeled prawns - see my note above
• 1 small handful of chopped coriander
• 4 large ripe tomatoes roughly chopped or 2 tinned tomatoes
• 1 tsp Ras el hanout (Moroccan spice mix - see below)
• 1 pinch saffron
• 1 tbsp ground cumin
• 1 mild chilli finely sliced
• 20 green olives
• 1 pinch salt to season
• 1 splash olive oil
• 1 cup water