CHOCOLATE is a raw or processed food produced from the seed of the tropical
Theobroma cacao tree. Cacao has been cultivated for at least three millennia in
Mexico, Central and South America, with its earliest documented use around 1100 BC. The majority of the
Mesoamerican people made chocolate beverages, including the
Aztecs, who made it into a beverage known as
xocolātl, a
Nahuatl word meaning "bitter water". The seeds of the cacao tree have an intense
bitter taste, and must be
fermented to develop the flavor.

After fermentation, the beans are dried, then cleaned, and then roasted, and the shell is removed to produce cacao nibs. The nibs are then ground to
cocoa mass, pure chocolate in rough form. Because this cocoa mass usually is liquefied then molded with or without other ingredients, it is called
chocolate liquor. The liquor also may be processed into two components:
cocoa solids and
cocoa butter. Unsweetened
baking chocolate (bitter chocolate) contains primarily cocoa solids and cocoa butter in varying proportions. Much of the chocolate consumed today is in the form of
sweet chocolate, combining cocoa solids, cocoa butter or other fat, and sugar.
Milk chocolate is sweet chocolate that additionally contains milk powder or condensed milk.
White chocolate contains cocoa butter, sugar, and milk but no cocoa solids.

Cocoa solids contain
alkaloids such as
theobromine and
phenethylamine, which have physiological effects on the body. It has been linked to
serotonin levels in the
brain. Some research found that chocolate, eaten in moderation, can lower blood pressure.
The presence of
theobromine renders chocolate toxic to some animals,
especially dogs and cats.
Chocolate has become one of the most popular food types and flavors in the world. Gifts of chocolate molded into different shapes have become traditional on certain holidays: chocolate bunnies and
eggs are popular on
Easter, chocolate coins on
Hanukkah,
Santa Claus and other holiday symbols on
Christmas, and chocolate
hearts or chocolate in heart-shaped boxes on
Valentine's Day. Chocolate is also used in cold and hot beverages, to produce
chocolate milk and
hot chocolate.
Around three quarters of the world's cacao bean production takes place in
West Africa.
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