I use 12 cups of potatoes, 1 cup onions, and one cup celery.Add with water just to cover and boil. While it is boiling I melt 3/4 cup butter and add 3/4 flour. Cook for a minute and add one quart half and half. Cook on med stiring until thickens. When potatoes are done add in white sauce. This makes a good clam chowder if you add two cans of clams. I am from Idaho and LOVE Russet potatoes.In fact our school mascot is a potato! NO KIDDING!!!