Yams
These bad boys are chock-full of potassium. One baked yam can contain up to 541 milligrams of potassium. The double-cook method, also known as potassium leaching, can help a little. This involves soaking your yams, the same as potatoes, in water for up to four hours to reduce potassium levels.
Apricots
Or any other dried fruit are just too high in potassium to be healthy for a diseased kidney. If one cup of fresh apricots equals 427 milligrams of potassium, dried apricots equals 1,500 milligrams. Try to stick to the list of healthy fruits mentioned in number 12 of this list.