cooked bananas

Does Cooking Vegetables Reduce Potassium? Blanching your vegetables in boiling water for 1 minute before using in cooking will also help reduce the potassium content. Is potassium destroyed by cooking? Cooked or raw, food has the same amount of calcium, phosphorus, magnesium, iron, zinc, iodine, selenium, copper, manganese, chromium, and sodium. The single exception to