Drip brew is a method for brewing coffee which involves pouring water over coffee contained in a paper filter. Water seeps through the coffee, absorbing its oils and essences, solely under gravity then passes through the bottom of the filter. The used coffee grounds are retained in the filter with the liquid falling (dripping) into a collecting vessel such as a carafe or pot. Drip brewing is the most popular method of coffee brewing, owing to the overwhelming popularity of the automatic drip brewing coffee machine. There are, however, several manual drip-brewing devices on the market, offering a little more control over brewing parameters than automatic machines.