What do you do when you have several pounds of leftover mashed potatoes? My friend the Windy City Epicurean suggested that I make potato soup. Even though I love potatoes and soup, I had never made potato soup before. This soup is incredibly easy to prepare. The mashed potatoes dissolved into the turkey stock, thickening it. I also added diced potatoes to add some texture to the soup.
You could add pureed broccoli or leeks to this soup, or even some leftover turkey.
Heat the stock in a large pot over medium heat until it comes to a boil.
Slowly whisk the potato into the stock 1/2 cup at a time.
Once all of the mashed potato has been whisked into the soup, add the diced potato. Cook for 15 minutes, or until the potatoes are soft. Serve warm.