I made with my own homemade 4 cups vegetable and 2 cups chicken broth. To make clean up easier and because my blender can't hold six cups at one time, I used my hand beaters to whip the potatoes...
Very flavorful and not too rich. I substituted Fage non-fat greek yogurt for the sour cream which was great.
I used bone broth and chicken broth for the liquid, otherwise followed the recipe. My family loved this soup.