Grilled chermoula prawns - John Tomlinson

Ingredients

• 2 tbsp cumin seeds lightly toasted and ground
• 1 tbsp coriander seeds lightly toasted and ground
• 1 tbsp sweet paprika
• 1 tbsp ground ginger
• 2 cloves of garlic chopped
• 2 seeded and chopped red chillis
• juice of 2 lemons
• 100 ml of olive oil
• 1⁄2 tsp salt
• 1⁄2 tsp black pepper
• 16 large green prawns, peeled, heads & tails intact