Complex sentence: Post Foods, LLC, also known as Post Cereals (formerly Postum Cereals) is a food company that was founded by C.W. Post in 1895 with the first Postum, a "cereal beverage", developed by Post in Battle Creek, Michigan.
Split into simpler sentences: Post Foods, LLC, also known as Post Cereals (formerly Postum Cereals) was founded by C.W. Post. It began in 1895 with the first Postum, a "cereal beverage", developed by Post in Battle Creek, Michigan.