The mystery of white chocolate is really not a mystery to the chocolate connoisseur.   Although it looks like chocolate, tastes like chocolate and even smells like chocolate it’s really not chocolate.   White chocolate is not a chocolate because it does not contain chocolate liquor. 

To make chocolate, the beans of the cacao tree are roasted, shelled, ground and heated until they become a thick, dark liquid called "chocolate liquor".  White chocolate is a blend of cocoa butter, sugar, vanilla, milk solids and lecithin.