Honey is a viscous, heterogeneous material, which consists mostly of sugars (present in an amorphous, devitrified state) and water (> 95%) and demonstrates certain thermal behavior during heat exchange. The thermal behavior of honey is influenced by several factors, including composition, temperature and amount and size of crystals. Knowledge of honey’s thermal behavior is critical during processing, handling and storage. Addition of syrups produces commercial honey of lower quality. When sugar syrups are added to authentic honeys, adulteration can be determined easily, since the syrups and honeys show significant differences in thermal phenomena, as well as in their amplitudes and positions on the temperature scale.