Clementine, carrot & ginger soup

Name: Clementine, carrot & ginger soup
Prep time: 15 min
Cook time: 35 min
Total time: 50 min
Ingredients: 2 tsp rapeseed oil; 1 large onion, chopped; 2-3cm ginger, finely chopped; ½ red chilli, chopped (optional); 450g Co-op carrots, chopped; 3 clementines, zest removed with a vegetable peeler (for the topping), flesh chopped; 1 litre vegetable stock, made with 2 reduced-salt stock cubes; 4 tsp Co-op reduced fat crème fraîche, to serve; 25g toasted seeds, and a few coriander sprigs, to garnish; Clementine zest; 2 tbsp Co-op vegetable oil; 1 red chilli, deseeded and cut into thin strips