The Kahva coffee maker is made of glass and metal

The Kahva coffee maker designed by Lina Fischer is made of glass and metal and looks like an hourglass. His whole coffee-making process is magical. First of all, pull out the inner core and add the right amount of water to the glass pot, and then insert the inner core of the coffee powder. Plug in the electricity and the water in the kettle gradually boils. You will find that the water level keeps falling until most of it