How exactly Moka pots work?
In: 7
Water starts boiling, boiled steam pushes the liquid water up to a middle chamber with coffee in it. In that chamber, it percolates through the coffee grounds, but keeps rising. Up through a filter that keeps the coffee grounds out of your drink, up through a tube, and eventually out into the top chamber, where it can be poured.
Pressurized steam has to go somewhere – its options are either the safety release valve or the nozzle leading to the coffee. Hot liquids and gasses rise but I reckon this would work in zero gravity regardless.
When it cools to liquid on its way up through the coffee and into the top reservoir the back pressure of the steam in the lower reservoir keeps that sweet sweet goodness flowing.
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