Chop potatoes, tomatoes, and onion into chunks.
Add 6 cups water and pressurecook till pulpy. (Approx. 3 whistles)
Cool, blend in a mixie, strain, keep aside.
Heat butter, add cabbage, onion, carrot, spring onion, stir fry for 2 minutes.
Add stock, boil for 10 minutes.
Add paprika, salt, sugar, sauce, macaroni, spaghetti, mix well.
Transfer to serving bowl, sprinkle grated cheese.