In a large pot, heat oil. Sauté leek and ginger for a few minutes. Add the carrots, butternut squash and potato. Sauté for about 1 minute. Add broth and bring to a boil. Season to taste.
Simmer until vegetables are tender, about 30-40 minutes.
Take out the ginger chunks. Puree and season to taste.
Garnish (not calculated in nutritional facts) : parsley and served in a bread bowl (Cambrooke)