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Processing

Anaerobic coffee: 299 specialty beans

The coffee ferments in sealed tanks with little or no oxygen. The cup is often intense, with winey or tropical notes. 10% of the 3,028 beans in our catalogue are processed this way.
See the beansHow it works
  • 299beans in the catalogue
  • 10%of the catalogueout of 3,028 beans
  • 23countries of originMost beans: Colombia
  • 117roasters with these beansMost: Bean Up

How it works

Instead of fermenting in open tanks, the coffee (whole cherries or pulped beans) goes into sealed tanks where little or no oxygen gets in. This often takes several days, while the producer watches temperature, pH and time. Carbonic maceration, borrowed from winemaking, fills the tank with carbon dioxide. Some producers add yeasts or lactic bacteria, or use thermal shocks. Afterwards the coffee is dried as a natural, a honey or a washed.

How it changes the cup

Controlled fermentation can push flavour a long way: anaerobic coffees are often intense and unusual: winey, boozy or tropical. Results vary a lot from lot to lot, and opinions on them divide coffee drinkers.

These are tendencies, not rules. Variety, region, roast and brewing shape the taste too.

How roasters label it

Process names on the beans in this group.

  • Natural anaerobic164
  • Anaerobic86
  • Anaerobic honey35
  • Carbonic maceration14

Countries of origin

Anaerobic coffee by country of origin.

All origins

Who roasts it

Roasters with the most beans in the catalogue.

All roasters
Bean Up15Sweet Beans Coffee Roastery12Concept Coffee Roasters12Sevengrams S.r.l / Coffee Studio 7Gr.9Kafar7Picapau Coffee Roastery7Paloma Coffee Roasters6Peacocks Coffee61000 Hills Products6DAK Coffee Roasters6Gorilla Coffee6Bugan Coffee Lab6Manhattan Coffee Roasters5Caffe Grano - palarnia kawy, kawiarnia, sprzedaż i serwis ekspresów5Black Hat Coffee - Roastery Atelier5Gearbox Coffee Roasters4Kávoholik4Pierre Coffee Roasters4Karma Coffee4Spojka Roastery4Cafezal Torrefazione Specialty Coffee4Sheep & Raven4YoCo Poland3black. coffee roasters3ANDY ROASTERS3Momento Coffee Roastery3Gardelli Coffee3Andraschko Kaffeemanufaktur3Black Delight Kaffeerösterei & Kaffeeschule3Typika3Klaro3Instytut Kawy3BlackBird Coffee3The Barn3Wildkaffee Rösterei3LA SOSTA Specialty Coffee3Steampower Specialty Coffee & Brunch3Doubleshot3Bracia Ziółkowscy3Dobra Palarnia Kawy3+77 more roasters

Anaerobic coffee: recently added beans

The newest beans in the catalogue.

And 239 more beans in the app. See which ones suit your taste in Atlas Lab

Other processes

All beans
See which ones match your tasteA short quiz in Atlas Lab. Get the app