The world’s most widely used method for preparing coffee is boiling, officially known as decoction. Of course, there are endless variations. For a long time, a copper “billycan” hanging over the fire was the “coffee maker” of choice for families in humbler social classes.
The ground coffee was boiled for a long time before settling in the bottom of the can. This process yielded a very strong, bitter-tasting coffee which was scooped up with a ladle.