Foods high in potassium

Potassium is a mineral that helps nerves and muscles work normally and supports fluid balance in the body. Foods at the top of this list include cream of tartar, dried courgette, dried spinach and dried mushrooms. The list ranks foods by their potassium content per 100g, rather than by the amount usually eaten.

Typical portion sizes therefore matter when comparing these foods. Cream of tartar is generally used in small quantities as a baking ingredient, while dried foods have less water and more concentrated nutrients than their fresh equivalents. Some kidney conditions can affect how the body handles potassium. Full figures are in the tables below.