Freeman knows this and is working out a system to keep time-strapped customers in a line separate from coffee drinkers who can wait for that pot of siphoncoffee or the hand-pour.
In 1840, the British Marine engineer invented Naber Siphoncoffee heater.
1840年，英国海洋工程师纳贝尔发明了虹吸式咖啡加热器。
3
In every percolation brewing method (drip, siphon, etc. ) the shape of the spent coffee bed is a significant indicatorof the uniformityof flow during the drawdown.