My potato soup is simple. I cook as many potatoes as I believe will serve the group. I drain the cooked potatoes and reserve the water. I mash the potatoes with some butter, adding the reserved water to thin. I add cooked carrots, celery (sometimes) and onions. I then add the sour cream and if it is too thin, add the water until it is the consistency I want. For the kids, I add chopped hot dogs (turkey) but you can add whatever you want and heat. Add pepper. When serving I add butter and shredded cheese. My 10 year old granddaughter love it and it is my go to meal.