For the autumn goulash, fry the onion in oil, add the diced meat, add half of the paprika and deglaze with vinegar. Season with salt and add enough water to cover the meat.
Cook on low heat for about 1/2 hour, stirring occasionally. In the meantime, peel potatoes and pumpkin and cut into equal cubes.
Add to the meat and possibly pour on some more boiling water. Bring to a boil until the vegetables are soft. Add mushrooms and chestnuts.
Mix flour with the rest of the paprika and a little water until smooth and add to the boiling goulash. Bring to a boil, stir in some nuts and season to taste.
Garnish autumn goulash with remaining nuts and serve with pasta.