The tasty secret of the cacao (kah KOW) tree was discovered 2,000 years ago in the tropical rainforests of the Americas. The pods of this tree contain seeds that can be processed into chocolate. The story of how chocolate grew from a local Mesoamerican beverage into a global sweet encompasses many cultures and continents.

The first people known to have made chocolate were the ancient cultures of Mexico and Central America. These people, including the Maya and Aztec, mixed ground cacao seeds with various seasonings to make a spicy, frothy drink.

Later, the Spanish conquistadors brought the seeds back home to Spain, where new recipes were created. Eventually, and the drink’s popularity spread throughout Europe. Since then, new technologies and innovations have changed the texture and taste of chocolate, but it still remains one of the world’s favorite flavors.

Source: http://www.fieldmuseum.org/chocolate/history.html