Is there potassium in cooked potatoes? A nutritional breakdown
                                
                                
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                                    4 min read                                
                            
                                A single medium-sized baked potato with the skin on can contain over 620 milligrams of potassium, exceeding the amount found in a medium banana. But the question remains: **Is there potassium in cooked potatoes** after boiling, mashing, or other preparations? The answer is a clear yes, though the quantity retained depends heavily on the cooking method and whether the skin is kept on.