Mars is a variety of chocolate bar produced by Mars, Incorporated. It was first manufactured in 1932 in Slough, England by Forrest Mars, Sr. The bar was sold in two different formulations. In its original British version the bar consists of milk chocolate surrounding caramel and nougat, developed to resemble the American candy bar known as the Milky Way, which had been introduced a decade earlier. An American version of the Mars Bar was produced which had nougat and toasted almonds covered in milk chocolate; later, caramel was added to the recipe as well. The American version was discontinued in 2002, though it has been revived for short runs since then.