I absolutely love this soup. It turned out perfect. To the person who posted about the soup being gritty, it's because the potatoes were over cooked. The only time that ever happens is if the potatoes to cooked for to long. They still need to be slightly firm. Another review about the sour cream seperating. If your flour, butter and milk becomes to hot and then you add cold sour cream to it you can curdle it and that can cause seperation. Food for thought. :) Delicious soup.