The Mars bar is a chocolate bar manufactured by Mars, Inc. It was first manufactured in Slough, Berkshire in the United Kingdom in 1932 as a sweeter version of the American Milky Way bar which Mars, Inc. produced in the USA (not to be confused with the European version of the Milky Way, which is a different confection). A different chocolate bar with the same Mars bar name was sold in the USA until 2002, when it was discontinued. However it was relaunched in 2010. It contains plain nougat, caramel and milk chocolate.