Erewhon Organic (pronounced AIR-wahn) was an organic cereal brand, and a refund subsidiary of Post Foods. It was known for their allergy-friendly line of organic cereals sold by health food stores across North America, and for being one of the first companies to market macrobiotic, organic whole foods in the United States. In 2019, the Erewhon Organic brand was discontinued by its parent company Post Foods, and replaced by Three Sisters Foods; which sells a similar product line of organic cereals.