These vacuum coffee pots - or syphon brewers - yield a delicious cup or two of coffee while providing a scientifcally captivating method. This is the Hario 2 cup Coffee Syphon "Technica". With a bit of experimenation and practice (watching the instructional video makes it a lot easier!), you can soon be a skillfull "vacuum brewer". The glass is made from high quality heat resistant glass and a strong sturdy base.