Nadiya Hussain's Carrot Soup Recipe | BBC2 Cook Once, Eat Twice

Ingredients

• 200g butter
• 2 tbsp coriander seeds
• 2 tbsp cumin seeds
• 1 tsp chilli flakes
• ½ tsp ground turmeric
• 6 cloves of garlic, minced
• 1 onion, diced
• 2 tbsp salt (please see note on salt below)
• 1kg carrots, peeled and grated
• 1 medium/large potato, peeled and grated
• 2 oranges, zest and juice
• 1 litre water or vegetable stock
• chilli oil
• fresh coriander