Salo in chocolate is a Ukrainian dish, created as a joke or experiment and produced since the late 1990s.
[2] In the late 1990s, Odesa Confectionery Factory started production of candies Salo v Shokoladi.
[3][1] The chocolate candies were invented as an April Fool's Day joke.
They were not actually salo; they contain a regular caramel filling with a small amount of rendered fat added as a salty flavouring.
A BBC reporter called it "one of the unhealthiest snacks in the world".