ng sugar, sweetened chocolates are produced, which can be sold simply as dark chocolate, or, with the addition of milk, can be made into milk chocolate. Making milk chocolate with cocoa butter and without cocoa solids produces white chocolate. Chocolate is one of the most popular food types and flavors in the world, and many foodstuffs involving chocolate exist, particularly desserts, including ice creams, cakes, mousse, and cookies. Many candies are filled with or coated with sweetened chocolate. Chocolate bars, either made of solid chocolate or other ingredients coated in chocolate, are eaten as snacks. Gifts of chocolate molded into different shapes (such as eggs, hearts, and coins) are traditional on certain Western holidays, including Christmas, Easter, Valentine's Day, and Hanukkah. Chocolate is also used in cold and hot beverages, such as chocolate milk, hot chocolate and chocolate liqueur. The cacao tree was first used as a source for food in what is today Ecuador at least 5,300 years ago. Mesoamerican civilizations widely consumed cacao beverages, and in the 16th century, one of these beverages, chocolate, was introduced to Europe. Until the 19th century, chocolate was a drink consumed by societal elite. After then, technological and cocoa production changes led to chocolate becoming a solid, mass-consumed food. In the 21st century, cocoa beans for most chocolate are produced in West African countries, particularly Ivory Coast and Ghana, which contribute about 60% of the world's cocoa supply. The presence of child labor, particularly child slavery and trafficking, in cocoa bean production in these cou