Yama Coffee Siphons - aka Vacuum Brewer. 

Vacuum coffee makers brew coffee using two chambers - These are hand blown glass with cloth filter.  Heat produces vapor pressure to push water from the lower chamber to the top, where coffee is added and infused.  The removal of heat source causes a vacuum, drawing the water back down to the bottom chamber.  The brewing process produce coffee which is cleaner than french press, yet still rich and allows for more control of brew streangth than drip. 

We carry 2 types of Coffee Siphons. 

One that can be placed anywhere (tabletop) & heat is provided by a portable burner & another that is used on your stovetop.