What is tempering chocolate?

Tempering Chocolate When melted chocolate returns to solid form the cocoa butter in the chocolate forms a crystal structure. The strange (or cool depending on who you're talking to) thing about cocoa butter is that the crystal structure they take on depends on the temperature at which they are formed. If the chocolate is allowed to cool on its own, the crystals of fat will be loose, resulting in a chocolate that is dull in appearance, soft & malleable, and greasy to the touch. This loose crystalline structure has a slightly lower melting point than tempered chocolate crystals. If, instead, while cooling, the chocolate is kept at 88°F (31°C), the loose crystal structure will not form (88°F is above the formation point of the loose crystals). At this temperature the cocoa butter actually forms a dense crystalline structure. Holding the chocolate at this temperature and stirring will allow a whole bunch of these stable crystal structures to form providing a lot of seed crystals to form ...  more