A Chemex coffee maker is a pour-over style coffee brewing device that was invented in 1941 by a chemist named Peter Schlumbohm. The Chemex consists of an hourglass-shaped glass carafe, a paper filter, and a wooden collar with a leather tie. The coffee brewing process involves placing the filter in the top of the carafe, adding coffee grounds, and slowly pouring hot water over the grounds in a circular motion. The water seeps through the filter, extracting the coffee flavor and oils, and drips into the carafe. The result is a clean and crisp cup of coffee, with a bright acidity and pronounced flavor notes. The Chemex has a unique, elegant design and is considered a classic and iconic coffee maker.