I also have fish in there too
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If you're baking them whole, I'd say at least 45 min and rinse them down with water and wrap with foil to keep them moist.
Preheat oven to 500 degrees.
Wash a russett/Idaho potato,dry.Bake potato for 1 Hour.
remove from oven,split,and garnish with either Olive Oil,Butter,or sour cream,freshly ground black pepper,Sea Salt and Chives or minced Italian flat Leaf parsley.James Beard genious at hand.Viola!