Tempering. Chocolate must be tempered to control the
polymorphism of cocoa butter [13, 58–60]. The melted
chocolate undergoes a temperature cycle to induce the
formation of nuclei in bV form (and also to destroy the
other unstable forms). The addition of seed is also used
to induce the crystallization step. New tempering method
used bVI cocoa butter seed. It facilitated greatly this
step that is less sensitive to temperature fluctuation,
quicker and gives even better final quality [53]. The
seed crystals formed during tempering permit the surrounding
liquid TAG to crystallize quickly in the right
polymorphic form [61, 62]. Effectively, it is more favorable
for TAG to attach to a growing crystal face than to
find sufficient energy to create new nuclei [63]. When
the seed crystal concentration is sufficiently high (0.5
to 2% of total mass), the chocolate can be used for
the production of molded or coated products.