Swiss Chard, Spinach and Beet Greens
Green leafy vegetables like beet greens, spinach, and swiss chard all have high amounts of nutrients and minerals, such as potassium. When served raw, a cup of these vegetables can have 140-290 mg of potassium. Even if leafy vegetables shrink when cooked, their potassium content does not change.
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Dates, Raisins, and Prunes
Common dried fruits include raisins, dates, and prunes. Dried fruits have concentrated nutrients, which includes potassium. There is 1,274 mg of potassium in a cup of prunes. That amount of potassium is almost five times the amount in a cup of plums.