"Chocolate" was known from prehistoric times in the New World (South America) where it originated, so no one knows who discovered it or when.
As far as the discovery of Chocolate by Europeans, by at least one account Columbus may have brought a few beans back in 1492, and Cortez is said to have noted its use in Mexico in 1519.
Try typing <history chocolate> in Google to get much more, including the dates of later developments like solid chocolate (it was consumed as a beverage before that).
Chocolate may have been discovered in 600 A.D. Cocoa trees grew wild in the Amazon and tropical rain forests of Central and South America for thousands of years -- way before it ever reached us in Europe.
it was discovered in 1527 in Spain
the cacao bean was discovered at South America
Yees they 'discovered' chocolate.
Maya.
brazil
Central America
Mexico and South America. They found the Incas drinking a chocolate drink.
Before the Spanish discovered chocolate there was none in Europe.
chocolate dino
Central America and Mexico
Her name was Ruth Wakefield.
chocolate was made 3000 years ago.