I made this dish tonight with excellent results. I added a chopped green bell pepper and only used 3 cans of water (14 oz cans). 3 lbs of chicken seems like a lot, so I used 4 large chicken breasts; it was little saucy, so next time might halve the sour cream too. It seemed liquidy at first, but the flour really thickened it up. The yield says four servings, but might be more depending on how much you eat. Fortunately, the BF seemed to like it, so he won't mind eating it all week!
This is a traditional Hungarian dish. May be served over rice, noodles or mashed potatoes.