Halve the pumpkin and core it with a soup spoon. Cut into pieces approx. 2 cm in size, complete with shell. Peel the onions and finely dice them. Peel the ginger and grate finely. Hold the juice and leftovers together on the grater.
Halve the chilli lengthways and core. If you like it very, very spicy, you can leave the kernels in there. However, the curry has enough pep even without the seeds. Finely chop the pod.