The Postum Cereal Company was founded in the late 19th century by C.W. Post, an American entrepreneur. The company is best known for its caffeine-free beverage made from roasted wheat and bran, marketed as a healthy alternative to coffee. Postum gained popularity in the early 20th century, especially among those seeking to avoid caffeine. In addition to Postum, the company expanded its product line to include various cereals and breakfast foods. Over the years, it became part of the larger Post Holdings, Inc., which continues to produce a range of food products, maintaining the legacy of its original offerings.