"System Büttner" coffee makers (German: ) have been a type of manual and semi-automatic coffee makers combining

coffee steeping Coffee preparation is the making of liquid coffee using coffee beans. While the particular steps vary with the type of coffee and with the raw materials, the process includes four basic steps: raw coffee beans must be coffee roasting, roasted ...

(infusion, full immersion) with drip-filtering (

percolation In physics, chemistry, and materials science, percolation () refers to the movement and filtration, filtering of fluids through porous materials. It is described by Darcy's law. Broader applications have since been developed that cover connecti ...

Overview

The idea to combine steeping with drip-filtering was utilized by the

Berlin Berlin ( ; ) is the Capital of Germany, capital and largest city of Germany, by both area and List of cities in Germany by population, population. With 3.7 million inhabitants, it has the List of cities in the European Union by population withi ...

-based

coffee roaster Roasting coffee transforms the chemical and physical properties of green coffee beans into roasted coffee products. The roasting process produces the characteristic flavor of coffee by causing the green coffee beans to change in taste. Unroaste ...

Carl Artur Büttner (also written as Carl Arthur Büttner) in his 1926 invention of a manual zero-bypass flat bottom coffee maker consisting of four parts, all made out of

porcelain Porcelain (), also called china, is a ceramic material made by heating Industrial mineral, raw materials, generally including kaolinite, in a kiln to temperatures between . The greater strength and translucence of porcelain, relative to oth ...

: a filter pot (, "O") with lid (, "D"),

saucer A saucer is a type of small dishware. While in the Middle Ages a saucer was used for serving condiments and sauces, currently the term is used to denote a small plate or shallow bowl that supports a cup – usually one used to serve coffee t ...

(, "U") and coffee pot (, "K"). The filter pot featured a through-glazed porcelain filter with triangularly-arranged slits with some air space below. The captured hot air causing mild micro-turbulences on the underside of the coffee grounds were said to help avoid clogging. Steeping was achieved utilizing a valving mechanism stopping the flow through the filter by a specially designed rotatable saucer with a single hole, which had to be positioned between the filter pot and the coffee pot so that the hole was initially closed and was manually opened when the coffee had been steeping for three to five minutes. Once

released Released may refer to: * Released (Jade Warrior album), ''Released'' (Jade Warrior album), 1971 * Released (Patti LaBelle album), ''Released'' (Patti LaBelle album), 1980 * ''Released: 1985–1995'', an album by Kronos Quartet, 1995 * ''Released'' ...

, it then took between three and six minutes for the coffee to drip through the meanwhile settled coffee bed into the coffee pot, a method sometimes also called cake filtration. Marketed since spring 1927 and up into, at least, the 1940s, these coffee makers were available as stand-alone devices for home use, but were also adopted by various other German coffee roasters (including Maschinenfabrik Bremen (

Bremen Bremen (Low German also: ''Breem'' or ''Bräm''), officially the City Municipality of Bremen (, ), is the capital of the States of Germany, German state of the Bremen (state), Free Hanseatic City of Bremen (), a two-city-state consisting of the c ...

, Germany), Georg Schrader & Co. aka Geschraco (Bremen, Germany), (

Braunschweig Braunschweig () or Brunswick ( ; from Low German , local dialect: ) is a List of cities and towns in Germany, city in Lower Saxony, Germany, north of the Harz Mountains at the farthest navigable point of the river Oker, which connects it to the ...

, Germany), (Braunschweig, Germany) and Columbus (Germany)) as part of larger coffee machines produced by the porcelain manufacturer ( Weiden, Germany) for heavy-duty semi-continuous batch use in

restaurant A restaurant is an establishment that prepares and serves food and drinks to customers. Meals are generally served and eaten on the premises, but many restaurants also offer take-out and Delivery (commerce), food delivery services. Restaurants ...

s and

canteen Canteen most often refers to: * Canteen (bottle), a water container * Cafeteria, a type of food service location within an institution in which there is little or no waiting staff table service * A complete set of cutlery comprising knives, forks, ...

s. The Büttner extraction method was boldly marketed claiming to be the world's best

moka Moka () is a village in Mauritius located mainly in the Moka District. The western part of the village lies in the Plaines Wilhems District. Since 1967 it forms part of Constituency No. 8 Quartier Militaire and Moka. The village is administered b ...

and coffee filter (""). The properties were said to be: * 100% porcelain, no contact with metal, enamel, or paper impacting the taste * Permanent filter requiring no paper filter or bags, thereby reducing costs * Claim to have no tendency of clogging the filter sieve holes (compared to

Karlsbad-style coffee maker A variant of the category of French drip coffee pots is the group of so-called Bohemian coffee pots, manual zero-bypass flat bottom coffee makers made out of porcelain only, including Karlsbad coffee makers (1878), Bayreuth coffee makers (20 ...

s) * Full aroma, claimed to have up to 30% increased extraction efficiency (also called ""), thereby reducing costs * Reduced amount of oily components and

caffeine Caffeine is a central nervous system (CNS) stimulant of the methylxanthine chemical classification, class and is the most commonly consumed Psychoactive drug, psychoactive substance globally. It is mainly used for its eugeroic (wakefulness pr ...

in finished coffee (will be floating on top of the water column in filter pot and claimed to be filtered out by settled coffee bed, a method sometimes called cake filtration) * Easy to clean by just washing out with water * Possibility to draw coffee from the coffee pot even before the

coffee preparation Coffee preparation is the making of liquid coffee using coffee beans. While the particular steps vary with the type of coffee and with the raw materials, the process includes four basic steps: raw coffee beans must be coffee roasting, roasted ...

process has been finished (just by temporarily opening the valve to draw a cup of coffee and then closing it again) * May need preheating of the porcelain due to longer than normal extraction time * Needs coarser than normal

coffee ground Coffee preparation is the making of liquid coffee using coffee beans. While the particular steps vary with the type of coffee and with the raw materials, the process includes four basic steps: raw coffee beans must be roasted, the roasted co ...

s (

semolina Semolina is the name given to roughly milled durum wheat mainly used in making pasta and sweet puddings. The term ''semolina'' is also used to designate coarse millings of other varieties of wheat, and sometimes other grains (such as rice or ma ...

-grade)

Preparation

Forms and sizes

Known forms include: * Büttner Kaffee: "" (2½ litre, 16–17 cups) * Büttner / Bauscher: /U/K/D1423/1, /U/K/D1423/2, /U/K/D1423/3, /U/K/D1423/4, /U/K/D1423/5 * Bremer Kaffeemaschine / Bauscher Weiden: 1518/3,00 (3 litre) * Ferd+Eichhorn Braunschweig / Bauscher Weiden: /U/K/D1521/4 * Büttner / Bauscher: /U/K/D1521/3, /U/K/D1521/5 * Bauscher Kaffeesparmaschine System Büttner: 1550/100 (1 litre) * Bauscher Weiden: 1550/175 (1.75 litre) * Büttner / Bauscher: 1560/0,80 (0.8 litre), 1560/1,40 (1.4 litre), 1560/1,7 (1.7 litre), 1560/2,00 (2 litre) * Heimbs & Sohn Braunschweig: 1560/3,00 (3 litre) * Geschraco / Bauscher Weiden: 1755/1,00 (1 litre) * Columbus / Bauscher Weiden Sizes: * Size 1: 0.5 litre * Size 2: 0.75 litre * Size 3: 1.5 litre * Size 4: 3 litre * Size 5: 6 litre

Overview

Preparation

Forms and sizes

See also

Notes

References

Further reading