I received this recipe from a dear client and it is wonderful. Make on stove top. Peel 3 or 4 good sized white potatoes, cover with water. Add 1 small stalk chopped celery and 1 cut up onion. Boil until most of the water has evaporated and all are very tender. Mash well with wooden spoon or big fork, add 1 cup whole milk, stir and heat. Add 1 cup grated cheddar cheese and heat until melted. Add 1 cup sour cream, stir and heat, but be careful not to boil. Salt and pepper to taste, then garnish as desired. I sometimes add a little celery seed. THIS IS THE BEST POTATO SOUP EVER!!