Some of the best-selling candy bars include Snickers, Hershey's Milk Chocolate and Kit Kat, according to Fox News article. Snickers candy bars are the highest-grossing, annually generating over $300 million in revenue for Mars Incorporated, while Hershey's long-selling chocolate bars generating more than $260 million. Nestle earns over $200 million annually from Kit Kat bars.
Snickers candy bars are named after a beloved horse owned by Frank Mars, founder of the candy company. In the United Kingdom, they were sold as Marathon Bars until Mars Incorporated discontinued the name. Since 1930, the year Snickers arrived in shops, people have enjoyed this candy bar consisting of soft nougat, caramel and peanut filling covered in milk chocolate. Millions of Snickers bars are made daily and each bar contains about 16 peanuts. In 1930, it costs 20 cents to purchase a Snickers bar, and this pricing sparked a bit of controversy, because most candy bars sold for 5 cents at the time.
Hershey's chocolate bars were first made after significant experimentation by Hershey Chocolate Company founder, Milton Hershey. Although, the company introduced an early version of milk chocolate in 1900, it took several more years of trial and error to create the correct recipe.