Curried Swede Soup

|Serve a big bowl of curried swede soup with cheese toasties for the ultimate comfort food dish. It's a great meal for the winter months.|swede|2 tbsp olive oil30g butter1 onion sliced2 celery sticks finely chopped1 thumb-sized piece of ginger peeled and finely grated1 large garlic clove crushed1 tsp ground cumin1 tsp ground coriander1 tsp ground turmeric1 tbsp medium curry powder800g swede peeled and chopped into 3cm pieces1.8 litre vegetable or chicken stock50ml double creamyogurt and chilli flakes to serve|Heat the oil and butter in a large saucepan or flameproof casserole dish over a medium heat and fry the onion celery and a large pinch of salt for 10 mins until the veg is soft and starting to caramelise. Stir in the ginger and garlic and cook for 1 min more. Add the cumin ground coriander turmeric and curry powder. Fry for 1 min more. Stir in the swede and stock. Bring to a simmer. Cover and simmer for 1 hr 15 mins more until the swede is soft. Season. Blitz using a hand blender until smooth. Stir in the cream.|30.00 minutes|6|BBC Good Food