| 摘要 |
[Object] To enhance an effect for keeping warm and prevent oxidation deterioration of coffee, serving delicious coffee, and to save energy, suppressing generation of carbon dioxide. [Constitute] A coffee machine 100 for spraying hot water over powder of coffee beans to extract coffee, in which a coffee machine body 10 includes a nitrogen gas generation unit 30 for generating nitrogen gas, and a nitrogen gas supplying part 31 for supplying the nitrogen gas generated by the nitrogen gas generation unit 30 into a pot 60, and the pot 60 included a pot body 61 made of heat insulating material, a cover part 62 for sealing up the pot body 61 and a heater 72 provided in at least one of the pot body 61 and the cover part 62, for heating at least the pot body 61.
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