A coffee percolator is a type of pot used to brew coffee. Coffee percolators have been long used and since old times have enjoyed great popularity. Recently, percolated coffee has been largely replaced by the French press, the drip brewer and espresso machines.
Coffee percolators work by boiling water going up through a central tube and filtering back down through a basket of ground coffee beans. It is preferably used when coffee is served at the table. Percolators are usually made of aluminum or stainless steel. There are three main types of coffee percolators electric, stovetop and microwave.