Lamb shank and herb soup

Ingredients

• 1 bunch finely chopped spring onions
• 1 mild chilli, finely chopped
• 3 cloves garlic, finely chopped
• 2 tablespoons olive oil
• 1 cup parsley, chopped
• 1 cup coriander, chopped
• 2 tablespoons ground cumin
• 2 tablespoons ground coriander
• 1 teaspoon ground turmeric
• 3 lamb shanks (get your butcher to cut into the bone to release more flavour)
• 1 1/2 litres water
• 250g chopped baby spinach or 200g frozen spinach