Ingredients
For the crab oil
1 crab shell, roughly smashed
6 tbsp olive oil
1 tbsp tomato purée
pinch chilli flakes
For the chowder
½ sweet potato, peeled and diced
1 clove garlic, crushed
knob ginger, grated
2 spring onions, chopped
290ml/½ pint water
85ml/3fl oz milk
85ml/3fl oz double cream
3 tbsp bread crumbs
½ lime, juice only
85g/3oz crab
1 tbsp flatleaf parsley, chopped
1 slice bread, diced
2 tbsp olive oil

Method
1. Put all the crab oil ingredients in a pan and slowly simmer for 10-12 minutes.
2. Put the first five ingredients for the chowder in a pan.
3. Simmer for 5-6 minutes.
4. Add all the other ingredients and simmer for 2-3 minutes.
5. Strain the crab oil and drizzle over the chowder.
6. Fry the diced bread in the oil until golden.
7. Serve in the soup.