Milky Way is a candy bar produced by Mars. It consists of chocolate-malt flavored nougat with caramel on top, all coated in chocolate. It is very similar to the Mars Bar that is sold outside of the United States. A Milky Way sold outside of the United States is very similar to an American 3 Musketeers bar, because it does not contain the caramel layer.
There are a few variations to the Milky Way such as a vanilla flavored nougat. There is also Milky Way Midnight, which is coated in dark chocolate as opposed to milk chocolate. Recently, the Milky Way Simply Caramel bar went on sale, which, as the name implies, is just caramel coated in chocolate.