The Chemex Coffeemaker is a manual pour-over style glass coffeemaker invented in 1941. It consists of an hourglass-shaped glass flask with a conical funnel-like neck and proprietary filters. These particular filters are thicker and densely woven than the traditional ones, which help regate the flow of coffee while removing much of the coffee oils. It that results in a cleaner and brighter taste of the coffee.
The beans used in a Chemex are coarsely ground.