attached to the heated chamber. Once the vapor has forced the hot water out, the counterweight activates a spring-loaded snuffer which smothers the flame and allows the initial chamber to cool down thus lowering pressure (creating a vacuum) and causing the brewed coffee to seep in.

Automated version

In 2022, the Japanese Tiger Corporation released an automated coffee-maker based on the vacuum coffee maker principle, which was marketed as the Siphonysta.

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