Potato Soup

This is a recipe handed down from my mother without measurements. "I don't know how much. I just dump it in." I've done my best to give approximate measurements but it really is a forgivable recipe.  

Ingredients
  • 5 lbs. potatoes, peeled and cubed
  • 1/2 an onion, diced
  • water
  • 1/2 cup butter
  • 1 cup flour
  • 12 oz. evaporated milk
  • 24 oz. sour cream
  • salt and pepper
Directions

     Peel and cube 5 lbs. of potatoes.  In a large pot, add potatoes and onion and cover with water.  The amount of water you use will be how much soup you end up with, so watch your potato:water ratio. I usually have about 3 inches or so of water above the potatoes. Boil potatoes until a fork pierces easily but not mushy.  Turn off heat.  Add butter.  In a separate bowl, combine evaporated milk and flour.  Temper the mixture by adding some of the soup water a bit at a time.  This will prevent clumping when added to the soup.  When you have a warm mixture, add it to the soup.  Add sour cream, salt, and pepper.  Stir and let it sit a few minutes to thicken.  Enjoy!