PURPOSE: To effectively and speedily cool a milk bottle for adjusting the milk having a high temperature by installing an air-permeable water-containing filter at a cooling air introducing port, which is formed oppositely to the upper part of the milk adjusting bottle.

CONSTITUTION: Boiling water 2 is poured into a milk bottle 1, and a cover 3 is applied, and said milk bottle 1 is arranged in a hot water feeding device body 4, and a switch is turned ON, and then a cooling fan 5 is revolved by an electric motor 6. Then, the cooling air is introduced into the body 4 from a cooling air introducing port 16, passing through a water-containing filter 12 installed on the upper part side surface of the body 4 as shown by the arrow A. After colliding with the upper part of the milk bottle 1, air flows downward through an air passage B and is discharged. Since, at this time, the cooling air is introduced on the peripheral wall of the milk bottle 1 by a rib 7, the milk bottle 1 is speedily cooled. Further, since the air taken in from outside passes through the water-containing filter 12, the milk bottle 1 is cooled by the vaporization heat of water, and thermal convection is accelerated.