Peel the pumpkin and cut into noodles. Add some of the salt to salt and leave to stand.
Peel the onions, chop them finely and sauté in butter, squeeze out the pumpkin and add to the onions. Stir in the tomato puree, season to taste with salt, pepper, caraway seeds and dill.
Mix the sour cream with a little water and the flour until it is nice and smooth and add to the pumpkin. Simmer on a low flame until soft.
Since the pumpkin has a lot of water, it may be necessary to add a little more seasoning.