Cut the pumpkin in half, remove the seeds. Peel the pumpkin, first in columns, then cut into cubes. Clean the leek, cut into rings and wash thoroughly. Celery peel and cut into small cubes. Heat 1 tablespoon of oil in a saucepan and sauté the pumpkin and celery briefly. Pour in broth and season with salt, pepper and a little curry.
Let the vegetables simmer for about 15 minutes. Add the leek after half the cooking time. Meanwhile, turn the ground pork into small balls. Heat 1 tablespoon of oil in a pan. Fry the meatballs for about 5 minutes until golden brown, then add them to the stew. Roast the pumpkin seeds in the pan without fat, remove and finally sprinkle on the stew