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. The origins of what is now known as the Kit Kat brand go back to 1911, when Rowntree's, a confectionery company based in York in the United Kingdom, trademarked the terms Kit Cat and Kit Kat. Although the terms were not immediately used, the first conception of the Kit Kat appeared in the 1920s
Kit Kat is a chocolate-covered wafer bar confection created by Rowntree's of York, England, and is now produced globally by Nestlé, which acquired Rowntree in 1988, with the exception of the United States where it is made under license by H.B. Reese Candy Company, a division of The Hershey Company. The standard bars consist of two or four fingers composed of three layers of wafer, separated and covered by an outer layer of chocolate. Each finger can be snapped from the bar separately. There are many different flavours of Kit Kat.