Cranberries! (4 ounces contain 400mcg) These are a great source of iodine as are potatoes with peel and navy beans. Himalayan sea salt and sea vegetables, often overlooked, are a great way to get your daily iodine needs met— ¼ teaspoon of granulated kelp provides over 2000% of your recommended daily amount. Now, don't make that funny face yet, kelp can easily be hidden in foods! For instance ¼ teaspoon is so small, when added to soups the kelp can't even be tasted. Kelp packs a powerful iodine punch and is an easy way to bring you up to par.