The AeroPress is a compact and versatile coffee brewing device invented by Alan Adler in 2005. It consists of a cylindrical chamber with a plunger and a filter cap. The brewing process involves placing coffee grounds and hot water in the chamber, stirring, and then pressing the plunger through a filter to extract the coffee. The AeroPress is known for its simplicity, speed, and ability to produce a smooth and rich cup of coffee with low acidity.