Sugars, salts and cooking oils are potassium-free, though they generally accompany foods that contain potassium. Some potassium-free cooking oils are canola, peanut, safflower, sesame and sunflower oil. Most foods that make up a balanced diet contain some amount of potassium.
Though few completely potassium-free foods exist, there are many foods that contain fewer than 100 milligrams of potassium per serving. Some low-potassium breakfast foods include plain enriched bagels, fortified puffed wheat or rice cereals, coffee brewed from grounds, and brewed black or chamomile tea. Some low-potassium sandwich ingredients are multigrain or whole grain bread, raw peeled cucumber, beef or pork hot dogs, slices of raw onion and slices of radish. Cheeses such as Cheddar, Swiss, mozzarella and whole milk cheese are low-potassium as well.
Many salad ingredients are low in potassium, including raw iceberg lettuce, lemon and lime juice, ripe canned olives, ripe red and cherry tomatoes, and raw white mushrooms. Some low-potassium dinner ingredients are cooked enriched macaroni, enriched or whole wheat spaghetti, store-bought frozen pizza, white rice and canned chicken noodle soup. Others are black pepper, chili powder and curry powder. Low-potassium snacks include store-bought angel food cake, red or green grapes, canned pears, microwave popcorn and sherbet. Ginger ale, root beer, orange soda, grape soda and lemon-lime soda are several low-potassium drinks.