vacuum coffee maker

noun

1. a coffee pot with upper and lower glass units, the upper for ground coffee and the lower for water that, when boiled, rises through the filter-stoppered bottom of the upper unit and remains there until drawn back down to the lower unit as brewed coffee by a reduction in pressure caused by the removal of heat.

Example Sentences

A small blue flame compels Scotch and other ingredients in the lower chamber of a vacuum coffee maker to ascend to an upper chamber filled with fruit tea, as dry-ice fog carpets the table.

From New York Times