Chocolate, native to central and South America, the founder of "Xocolatl", meaning "bitter". The main raw material of cocoa beans in the equatorial north and south latitude 18 degrees within the narrow strip.          

The main ingredient of chocolate is cocoa butter, cocoa butter contains theobromine, a variety of poisonous animal, but for humans, theobromine is a healthy anti depressant, so chocolate consumption upgrade spirit, enhance the exciting effect. Chocolate contains phenylethylamine, widely circulated to make people have the feeling of love gossip.