Mr. Goodbar is a chocolate bar containing peanuts, whose packaging is identifiable by its yellow background and red text. It is manufactured by The Hershey Company and was introduced in 1925. Although the Hershey Milk Chocolate Bar with Almonds had been produced since 1908, Milton Hershey initially did not want the Hershey brand name associated with a chocolate bar that contained peanuts, so it was introduced as being produced by the "Chocolate Sales Corporation" (a fictitious company name created by William Murrie). It is currently available both as an individual product and as one of the varieties of Hershey's Miniatures.
Looking for Mr. Goodbar was also the title of a 1975 novel by Judith Rossner, and an Oscar-nominated 1977 movie.
Read more about Mr. Goodbar: Ingredient Changes To Reduce Production Costs