Question: are all potatoes high in potassium?
Answer: One potato (136 grams) can provide 515 mg of potassium, which is 11% of the AI (1, 18). In fact, one study reported that potatoes are the best dietary source of potassium, calculating that a small baked potato provides 738 mg of potassium, or nearly 16% of the AI (1, 19 ).