Nearly 7 months later, I've finally captured our new vacuum-action chemistry--err, coffee process on camera.
The apparatus, pre-assembly:
Assembled, coffee and water in place:
As the water heats, vacuum action sucks it up the tube into the globe, where the coffee awaits:
When the water in bottom begins to boil, the steam pressure agitates the coffee, eliciting the perfect brew:
With a centimeter or two of water remaining in the bottom, the entire assemblage is gently removed from the heat, releasing the suction in seconds as it cools:
The now-brewed coffee drains back into the bottom, leaving the grounds on top:
Detach and enjoy!