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Solid chocolate containing added milk

Milk chocolate is a form of solid chocolate containing cocoa, sugar and milk. It is the most consumed type of chocolate, and is used in a wide diversity of bars, tablets and other confectionery products. Milk chocolate contains smaller amounts of cocoa solids than dark chocolates do, and (as with white chocolate) contains milk solids. While its taste (akin to chocolate milk) has been key to its popularity, milk chocolate was historically promoted as a healthy food, particularly for children. Major milk chocolate producers include Ferrero, Hershey, Mondelez, Mars and Nestlé; collectively these supply over half of the world's chocolate. Four fifths of all milk chocolate is sold in the United States and Europe, and increasing amounts are consumed in both China and Latin America. Chocolate was originally sold and consumed as a beverage in pre Columbian times, and upon its introduction to Western Europe. The word chocolate arrived in the English language about 1600, but initially described dark chocolate. The first use of the term "milk chocolate" was for a beverage brought to London from Jamaica in 1687, but it was not until the Swiss inventor Daniel Peter successfully combined cocoa and condensed milk in 1875 that the milk chocolate bar was invented. Switzerland developed as the centre of milk chocolate production, particularly after the development of the conche by Rodolphe Lindt, and was increasingly exporting to an international market. Milk chocolate became mainstream at the beginning of the twentieth century following the launch of Milka, Cadbury Dairy Milk and the Hershey bar, inducing a dramatic increase in world cocoa consumption. To provide ethical assurances on cocoa harvesting for consumers, Fair Trade and UTZ Certified chocolate was established in the 21st century.

The word "chocolate" was first used in English about 1600. The word derives from xocolātl, from Nahuatl, the language of the Aztecs, influenced by the Yucatec Mayan word chocol, "hot", with the Nahuatl word atl, "water". The first instance of "milk chocolate" appeared soon after, referring to a drink of chocolate combined with milk. In 1687, Hans Sloane, an Irish physician and collector, introduced the beverage to London after seeing the people of Jamaica enjoying the drink. The preparation was promoted for its medicinal properties, and was manufactured by Nicholas Sanders and William White, and was joined by other milk chocolates around the city. From there, milk chocolate spread, first to France, where the pharmacist to Louis XVI, Sulpice Debauve, introduced the drink to the Court, and then further afield, reaching as far as the United States by 1834. In Dresden in the German Confederation, Jordan & Timaeus were developing a mechanism to produce hard chocolate using steam power. On 23 May 1839, they advertised a solid chocolate containing fresh milk, calling it "steam chocolate" (dampfchocolade). However, that version of milk chocolate did not become successful and when major companies like Fry's of Bristol and Lindt of Zürich started producing eating chocolate in the 1840s, they only made plain chocolate. In 1875, the Swiss entrepreneur and chocolatier Daniel Peter, based in Vevey and related to the Cailler family, first successfully combined cocoa mass, cocoa butter, and sugar with condensed milk (recently created by his neighbour and friend Henri Nestlé) to produce milk chocolate. The process was further refined by another Swiss chocolatier, Rodolphe Lindt, who developed the conche in 1879, which created a smoother product. However, it is only after many years of fine tuning that the original formula was developed and, in 1887, the Gala Peter brand was finally launched. Daniel Peter called his product 'Gala' after the Greek word meaning 'milk'. Not only did milk soften the bitterness of chocolate and refined its taste, but it also lowered its production cost due to a lower cocoa content. In 1898, Cailler opened its new factory at Broc, where milk chocolate began to be produced on a large scale. Peter also opened a larger factory at Orbe in 1901, before merging with Kohler. The Swiss chocolate industry also expanded in the late nineteenth century with the establishment of new companies, such as Frey and Tobler. From these developments, Switzerland soon dominated the chocolate market. Production increased dramatically, and by 1905, the country was producing of chocolate, a vast proportion of it exported. Meanwhile, there were other developments outside Switzerland. Swiss dominance was challenged in 1905 by a product from England, Cadbury Dairy Milk. Although there had been other milk chocolates produced outside Switzerland before – Cadbury themselves had produced one in 1897 – they were coarse and generally inferior to the Swiss varieties, and consequently suffered from low sales. In contrast, Dairy Milk quickly rose in prominence and, by the 1920s, was the bestselling chocolate in the UK. Simultaneously, in 1900, Milton Hershey had introduced the first Hershey bar, which revolutionised the popularity of milk chocolate in the United States. Although initially only available in Pennsylvania, by 1906 it was sold across the country. Popularity blossomed, particularly following World War I, when the United States Army issued chocolate bars to troops, for many their first taste of milk chocolate. By 1911, Peter's milk chocolate recipe represented half of the world's chocolate consumption. Milk chocolate became the standard of what the public thought chocolate should be. As a result of the increasing popularity of chocolate, especially among the working and middle class, cocoa consumption began to grow extraordinarily; global demand grew 800 percent between 1880 and 1900. To meet these demands, cocoa production expanded, notably in West Africa, where the Forastero variety began to be mass cultivated in the early twentieth century. Although considered inferior to the Criollo variety, the Forastero type bean is more suited for the manufacture of milk chocolate and is cheaper to produce owing to its higher yields. Countries in West Africa eventually dominated world production of cocoa. The Cailler factory of Broc and the Hershey factory of Derry Township are typical examples. The popularity of milk chocolate and the wide availability of milk also favoured the creation in the 1930s of a new variety of chocolate containing even more milk: white chocolate. Over the decades, milk chocolate manufacture spread worldwide and new brands appeared. In 1910, Arthur and George Ensor created the first milk chocolate in Canada, using milk from Jersey cows. At the same time, Belgian chocolate production also expanded rapidly. From small beginnings in the 1870s, by the 1920s, there were ninety chocolate manufacturers around Brussels alone. In 1926, Meiji brought out their bar, the first example to be made in Japan. Milk chocolate swiftly dominated chocolate sales in most markets. It even found a place during World War II, when US troops carried D Ration chocolate, nicknamed Logan Bars after Quartermaster Paul Logan, as an emergency supply. At the same time, new ways of presenting chocolate appeared, from different shapes, like Cadbury Buttons, to the profusion of boxed varieties that became a feature of Belgian chocolate. At the same time, the number of independent manufacturers declined sharply. The first consolidations in the industry were in Switzerland, where the takeover of Lindt by Sprüngli took place in 1899, and Nestlé had already emerged as the largest manufacture in the country by 1929. However, pace quickened in the latter half of the century. During the last three decades of the twentieth century, there were over 200 takeovers in the industry. By 2001, over half the global chocolate market was held by 17 companies. By 2013, the top four manufacturers, Mondelez, Mars, Nestlé and Ferrero, comprised 49 percent of the sales. This has continued; for example, in 2015, Thorntons, the British chocolatier that in four years before had produced the largest chocolate bar in the world weighing , was taken over by Ferrero. In 2018, the global market for milk chocolate was worth $63.2 billion, and is expected to approach $73 billion by 2024. Consumption is dominated by the United States and Europe, which between them consumed over 80 percent of global production. However, the new century saw expansion in different markets. For example, between 2000 and 2013, the areas that saw the highest growth included the Middle East and Africa (where retail value rose 239 percent), Latin America (up 228 percent). Even in China and Japan, which traditionally are places of very low milk consumption, milk chocolate sales increased at the start of the twenty first century. Between 1999 and 2003, Chinese chocolate imports rose from $17.7 million to $50 million. By 2007, over 38 percent of chocolate sales in China were milk chocolate. By 2018, the value of sales by Japanese chocolatier Meiji was approaching that of the top producers in Europe, and the total sales by the group had surpassed the total for all confectionery sales by Hershey, putting the American company outside a top five ranking. Although dark chocolate regained some popularity in the late twentieth century, milk chocolate remains the most preferred and consumed type of chocolate.

Milk chocolate is 51% carbohydrates, 38% fat, 8% protein, and 2% water (table). In a reference amount of , milk chocolate supplies 565 calories of food energy, and is a rich source (20% or more of the Daily Value, DV) of vitamin B12 (31% DV), riboflavin (25% DV), and dietary minerals, such as phosphorus (30% DV) (table). Milk chocolate has moderate content (10–19% DV) of thiamine and several minerals.

While all milk chocolate contains cocoa, milk and sugar, the proportion of these ingredients varies between countries and brands, which in turn affects its taste. For example, Belgian chocolate is known for its mild milky flavor, while some Russian brands have a strong cocoa taste. Cost is the main reason for the introduction of cocoa butter replacements like coconut and palm oil. However, there are also regulatory reasons. In 1973, for example, the European Union decreed that chocolate must have a minimum of 35 percent dry cocoa solids. China has also introduced legislation to require locally produced milk chocolate to contain 25 percent cocoa butter. Milk chocolate has been presented as a health food since Cadbury first advertised Sloane's Milk Chocolate for its medicinal properties in the nineteenth century. In the 1920s, the Baby Ruth bar was touted as a health food for children by Allan Roy Dafoe. Advertisements pronounced that chocolate bars combined both a source of essential energy and the "perfectly balanced food" of milk. Cocoa butter was claimed to reduce tooth decay. Chocolate was claimed to produce calming effects, reducing stress, and producing a similar feeling to falling in love.

Milk chocolate is manufactured from cocoa, milk and sugar. It is the manufacturing process, rather than the raw ingredients, which is most responsible for each brand's flavor. Therefore, cocoa butter has to be produced in parallel by separating cocoa liquor into cocoa butter and cocoa powder. Milk chocolate has a minimum cacao content of 10% in the US, and has been produced with as much as 70% cacao. as excess water would damage the flowing properties of the liquid chocolate. Spray dried full fat milk powder is normally used, but alternatives include anhydrous full fat or skimmed milk powders, and the choice affects the overall flavor. The powder is then refined with the additional cocoa butter. British milk chocolate derives its characteristic, slightly cooked flavor by using a dehydrated blend of milk, sugar, and cocoa called chocolate crumb. The resulting milk chocolate has been described by experts as "tangy", "sour", and "acidified".

At the beginning of the twentieth century, bars which combined milk chocolate with other sweet ingredients appeared on both sides of the Atlantic. In 1904, Cailler launched its Branche, a praline filled and branch looking bar. Other Swiss chocolatiers, Theodor Tobler and Emil Baumann, invented Toblerone in 1908 which contained almonds, honey and nougat. In the United States, the Goo Goo Cluster was first introduced in 1912 which added caramel, marshmallow and peanuts to the list of ingredients. These were soon followed, in 1914, by Fry's Turkish Delight in the UK. Shortly afterwards, Clark introduced the Clark Bar, which has been called the first combination bar, in 1917. In 1920, Otto Schnering of the Curtiss Candy Company created the Baby Ruth bar. By 1925, it was the most popular bar in the US. Soon afterwards, two other brands that would become global giants followed, the Mars Bar in 1932 and, three years later, Rowntree's introduced the Kit Kat. By 2014, 650 Kit Kat bars were being consumed each second. Combination bars came to dominate the confectionery market with sales surpassing $140 billion in 2018.

Ethical issues have been intrinsically linked to chocolate in general since the early days. Many of the early chocolatiers, including Cadbury, Fry's, Rowntree's and Terry's, were founded by Quakers who saw the wellbeing of their workers part of their business ethic. The companies were pioneers in social welfare, providing a safe working environment, high quality housing and other benefits to employees that were ahead of many of the industrial norms. Cadbury, for example, provided paid holidays, insurance and night schools for workers, as well as constructing Bournville in Birmingham, UK. However, the working conditions of many in the wider chocolate supply chain remained poor. Slavery, and later bonded labour, was often employed on the plantations that provided the sugar used to make chocolate. Even after the abolition of slavery, the working conditions in many plantations was still poor, with child labour being frequent and unreported. In 1975, the first in a series of International Cocoa Agreements tried to set what were termed "fair labour conditions" and eliminate child labour. Rising consumer awareness, as well as greater corporate and employee interest, led to increasing voluntary action to address human rights issues. Fundamental to this has been the rise of Fair Trade and UTZ Certified chocolate. Initially launched by Stichting Max Havelaar in the Netherlands in 1988, the Fair Trade movement expanded into the mainstream in the following decades, with cocoa second to coffee in terms of sales and volume by 2011. Much of this is driven by the use of Fair Trade ingredients by major brands. For example, in Germany, major supermarket Lidl commenced promoting their own brand milk chocolate with their own Fair Trade label in 2006. Similarly, in the UK, two of the best selling milk chocolate bars, Cadburys Dairy Milk and Nestlé's Kit Kat were marketed with a Fair Trade label starting in 2009 and 2010 respectively.