Tempering machines
General information
Chocolate tempering is a key stage in chocolate production,
it’s a complex & prolonged process which requires accurate
observance of process parameters. The secret of a proper tempering
lies in observing the correct sequence of operations related
to chocolate mass heating & cooling. At each stage of
this process it is necessary to precisely maintain the preset
temperature of chocolate mass since even negligible temperature
deviations may bring all efforts to nothing. First of all
this is caused by the availability of cacao-butter in chocolate
mass, cacao-butter is polymorphic fat crystallizing &
solidifying under cooling, however, depending on cooling conditions
it may take various shapes.
Tempering is required for the transition of cacao-butter
into the most stable form. For this purpose hot chocolate
is fist cooled down to 28°С and then heated again up to
32°С. Infringement of the technology at least at one stage
will be immediately reflected on the chocolate appearance
& structure. E.g. a distinctive white film may appear
on its surface. Such "bloom" is a result of improper
tempering. "Bloom" appearance occurs with time &
not at once. Besides, under incorrect cooling chocolate may
become coarse-grained & crumbly. Its flavoring properties
are preserved though the marketable state will be desperately
spoiled. A tempered chocolate exhibits a shining surface,
homogeneous in color and it melts in the mouth.
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