Heat oil in a large pot over medium heat. Add the onion and cook, covered, stirring occasionally, until tender, 6 to 8 min.
Meanwhile, combine the stock powder with water, stirring to dissolve.
Add pumpkin, carrots, turmeric and 1/2 tsp pepper to the pot; cook, stirring, 1 minute. Add stock, bring to a boil, then reduce heat and simmer until vegetables are very tender, 20 to 25 mins.
Using a stick mixer (or standard blender, working in batches) purée the soup.
Serve with a swirl of coconut milk (2 tsp per serve).
Serve with a swirl of coconut milk (2 tsp per serve).
Equipment:
Stick mixer, large mixing jug
Refer to labels for allergen and other product information.