Kit Kat is a chocolate-covered wafer bar confection created by Rowntree's of York, United Kingdom, now owned by Nestlé.
The standard bars consist of two or four pieces composed of three layers of wafer, separated and covered by an outer layer of chocolate.
Use of the name Kit Kat or Kit Cat for a type of food goes back to the 18th century, when mutton pies known as a Kit-Kat were served at meetings of the political Kit-Cat Club in London owned by pastry chef Christopher Catling.
Variants in the traditional chocolate bar first appeared in 1996 when Kit Kat Orange, the first flavour variant, was introduced in the United Kingdom. Its success was followed by several varieties including mint and caramel, and in 1999 Kit Kat Chunky