Preheat the oven to 200C/390F.
Roast or steam the pumpkin wedges on baking trays for 45 minutes until a knife goes through easily, and let it cool slightly.
While the pumpkin is roasting, prepare the garlic and onions as described.
Sweat the onions in the oil on medium heat for 5 minutes. Add the garlic and stir for 2 minutes.
Add the curry powder and mix well with the onion and garlic, stirring until fragrant (around 4 minutes). If the mixture is a little dry, add some more oil.
If using a food processor or blender, add the cooked pumpkin, coconut cream, lime or lemon juice and the curry mixture to blend for a few minutes until smooth. Alternatively, place all the ingredients in a large saucepan and blend with a stick/immersion blender.
Re-heat the soup and serve. You can garnish with coconut cream (perhaps watered down a bit to create a nice pattern on the surface of the soup) or with furikake seasoning.
Leftovers may be stored in the fridge for up to 4 days or can be frozen for up to 3 months.