Put the onion and the ginger in the chopping bowl and finely chop. In a big pot add 1 spoon of coconut oil, the chopped mixture and the turmeric. Cook for 5 minutes at medium heat. Add half of the pumpkin cubes and roughly chop, then repeat. Add the pumpkin, the vegetable broth and the coconut milk to the pot. Cook at low heat for 10 minutes.