Method
Serves 4. Put a large pan over medium heat, add oil, then spices (0.5 tsp chilli flakes, 1 tsp cumin, 2 tsp ground hogweed seeds) and sizzle for a few seconds. Add 1 chopped red onion and 2 large peeled roughly chopped sweet potatoes. Cook 10-15 mins until starting to caramelise. Pour in enough vegetable stock to just cover. Cook until sweet potatoes are soft. Puree with a hand blender. Season with salt and pepper. Serve with a dollop of creme fraiche or yoghurt.