Pas de Boue, French Press Coffee Maker

A French Press is a common coffee brewing device that utilizes a plunger mechanism to force coffee grounds through a springed mesh filter. This mechanism often lets through undesired sediment colloquially known as “coffee mud”. This new design solves the problem of coffee mud by employing a domed filter that simultaneously contains and concentrates the grounds for a more flavorful extraction.

The French Press (or cafetiere) is a classic coffee maker with roots dating back to the 19th century. In 1852 two French inventors patented an early version that used a simple piston and a cheese cloth like filter. Later, Italian designers Giulio Moneta and Attilio Calimani improved it in 1928 by adding a spring sealed edge, and Faliero Bondanini’s 1958 refinement produced the form we recognize today. However, the flat screen and spring seal often let fine particles slip past, creating what connoisseurs refer to as “coffee mud” the gritty remnants of grounds that make their way to the cup and spoils the last sip.

This new design solves the problem of coffee mud by employing a domed plunger equipped with an ultra fine mesh filter screen. As the plunger mechanism is pushed down, coffee grounds are forced into the filter dome containing them whilst also concentrating the “coffee puck” as it is plunged thus also simultaneously making for a more concentrated and flavorful extraction.