Which foods have the highest potassium content and should be avoided in those suseptible to hyperkalemia?

Highest content (> 25 mEq/100 g)
  • dried figs
  • molasses
  • seaweed
Very high content (>12.5 mEq/100 g)

  • dried fruits (dates, prunes)
  • nuts
  • avocados
  • bran cereals
  • wheat germ
  • lima beans
High content (>6.2 mEq/100 g)

  • vegetables (spinach, tomatoes, broccoli, beets, carrots, cauliflower, potatoes)
  • fruits (bananas, cantaloupe, kiwis, oranges, mangoes)
  • meats (ground beef, steak, pork, veal, lamb)
Source

Gennari, F. MD. Hypokalemia. N Engl J Med 1998; 339 (7): 451-458.