A chocolate bar is a confection in bar form comprising some or all of the following components: cocoa solids, cocoa butter, sugar, milk. The relative presence or absence of these components form the subclasses of dark chocolate, milk chocolate, and white chocolate. In addition to these main ingredients, it may contain emulsifiers such as soy lecithin and flavors such as vanilla. There are many varieties of chocolate; milk chocolate, dark chocolate, white chocolate, peanut butter chocolate, and many more.
A candy bar (called a chocolate bar in Australian English, British English, Canadian English, Indian English, Irish English and New Zealand English) is a form of confectionery usually packaged in a bar or log form, often coated with chocolate, and sized as a snack for one person. But within that term, a wide variety of products exist, ranging from solid chocolate bars to multiple layerings or mixtures of ingredients such as nuts, fruit, caramel or fondant.
Certain brands of chocolate bars are sold as being for nutritional supplementation purposes. These bars contain protein and various vitamins while still retaining a sweet taste.
Up; to and including the 19th century, candy of all sorts was typically sold by weight, loose, in small pieces that would be bagged as bought. The introduction of chocolate as something that could be eaten as is, rather than used to make beverages or desserts, resulted in the earliest bar forms, or tablets. At some point, chocolates came to mean any chocolate-covered candies, whether nuts, creams (fondant), caramel candies, or others. The candy bar evolved from all of these in the late-19th century as a way of packaging and selling candy more conveniently, for both buyer and seller. This "convenience" did not include price, of course, as the buyer had to pay for the packaging. It was considerably cheaper to buy candy loose, or in bulk.
In 1847, the Fry's chocolate factory, located in Union Street, Bristol, England, moulded the first ever chocolate bar suitable for widespread consumption. The firm began producing the Fry's Chocolate Cream bar in 1866. Over 220 products were introduced in the following decades, including production of the first chocolate Easter egg in UK in 1873 and the Fry's Turkish Delight (or Fry's Turkish bar) in 1914. In 1896 the firm became a registered private company. It was run by the Fry family, with Joseph Storrs Fry II, grandson of the first Joseph Storrs Fry, as the chairman.
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