Abstract: The invention relates to an apparatus (1) for the heat storage of foodstuffs, provided with an aperture for taking foodstuffs out of the interior (T) of the apparatus and for setting them in the interior (T) of the apparatus, adjusting devices (4) for adjusting the relative humidity and temperature of air located in the interior (T) of the apparatus, said adjusting devices comprising at least one air moisturizing unit (2) provided with an essentially horizontal water reservoir (23).