Heat oil in a large pan.
Add in onion, carrot & ginger.
Let cook for 5 minutes to soften the onion.
Mix up vegetable stock using water and stock cube. Add to pan and bring to the boil. Cover saucepan and let simmer for 35 minutes so that your carrots are nice and soft.
Pour contents of pan, along with salt & pepper, into food processor and blend, adding more water if needed.
Garnish with basil and serve.