chocolate_巧克力_英语演讲_presentation.ppt

* Romance Health Energy Joy Have you ever wondered where chocolate comes from? Now, well enter the amazing world of chocolate! Chocolate has been used as a drink for nearly all of its history. The earliest record of using chocolate dates back before the Olmec. The Maya civilization grew cacao trees in their backyard, and used the cacao seeds to make a frothy, bitter drink. The Mayas believed that chocolate had mystical properties---but cocoa also had commercial value. In fact, cocoa beans were used as a form of currency that was worth its weight in gold! Chocolate in its solid form was invented in 1847. Joseph Fry discovered a way to mix some of the cocoa butter back into the dutched chocolate, and added sugar, creating a paste that could be moulded. The result was the first modern chocolate bar. Chocolate starts with a tree called the cacao tree (Theobroma cacao). This tree grows in equatorial regions, especially in places such as South America, Africa and Indonesia. The cacao tree produces a fruit about the size of a small pineapple. Inside the fruit are the trees seeds, also known as cocoa beans. The beans are fermented for about a week, dried in the sun and then shipped to the chocolate maker. In the next sections, the chocolate maker will turn these raw beans into luscious chocolate. The chocolate maker starts by roasting the beans to bring out the flavor. Different beans from different places have different qualities and flavors, so they are often sorted and blended to produce a distinctive mix. Next, the roasted beans are winnowed. Winnowing removes the meat (also known as the nib) of the cocoa bean from its shell. Once roasted, winnowed and blended, the nibs are ground, and the ground nibs form a viscous liquid called chocolate liquor (the word liquor has nothing to do with alcohol -- thats just what its called). Chocolate liquor is pure, unsweetened chocolate. Eaten in this state, its pretty nasty because it is bitter