Potatoes and sweet potatoes

Potatoes and sweet potatoes are high in potassium. One medium-sized baked potato (156 grams) contains 610 mg of potassium, while one average-sized baked sweet potato (114 grams) contains 541 mg.

Some potassium-rich foods, such as potatoes and sweet potatoes, can be soaked or leached to reduce their potassium content. By cutting potatoes into small, thin pieces and boiling them for at least 10 minutes, you can reduce the potassium content by about half. Potatoes that have been soaked in water for at least 4 hours before cooking has been shown to have a lower potassium content than those that have not been soaked. This is referred to as potassium leaching or the double-cook method.

Although double cooking potatoes reduces their potassium content, it is important to remember that this method does not eliminate their potassium content. Double-cooked potatoes can still contain significant amounts of potassium, so it's best to practice portion control to keep potassium levels in check.