<Li> Cadbury chocolate is the brand leader in the United Kingdom . First produced by George Cadbury Junior in 1905, Cadbury Dairy Milk was made with a higher proportion of milk than previous chocolate bars, and it became the company's best selling product by 1914 . It is the best selling milk chocolate bar in the UK, followed by Galaxy . </Li> <Li> "Hershey process" milk chocolate is popular in the US . The process was invented by Milton S. Hershey, founder of The Hershey Company . The process uses fresh milk from local farms . The logistics of purchasing and delivering fresh milk is difficult as, according to state regulations fresh milk cannot be held for more than 72 hours after its reception . If not immediately processed into milk chocolate, the milk must be disposed of . The actual Hershey process is a trade secret, but experts speculate that the milk is partially lipolyzed, producing butyric acid, and then the milk is pasteurized and stabilized . This process gives the product a particular taste, to which the US public has shown to have an affinity, to the extent that some rival manufacturers now add butyric acid to their milk chocolates . </Li> <Li> Dark chocolate, also known as "plain chocolate" or "black chocolate", is produced using higher percentages of cocoa, traditionally with cocoa butter instead of milk, but there are also dark milk chocolates and many degrees of hybrids . Dark chocolate can be eaten as is, or used in cooking, for which thicker, baking bars, usually with high cocoa percentages ranging from 70% to 99% are sold . Dark is synonymous with semisweet, and extra dark with bittersweet, although the ratio of cocoa butter to solids may vary . </Li> <Li> Swiss White chocolate White chocolate is made of sugar, milk, and cocoa butter, without the cocoa solids . </Li>

What's the difference between semi-sweet chocolate and dark chocolate
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