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RoastersDays Coffee Roaster
✦ Experimental roaster◐ Community verified
27 beans

Days Coffee Roaster

Niigata, Japan

Days Coffee Roaster is a Niigata specialty roaster, with cafes in Furumachi (Nishibori) and Onoike. Founder Shirai-san leans into innovative processing — nitrogen-anaerobic, carbonic maceration, thermal-shock and infused lots — alongside classic single origins, with a stated focus on highlighting each bean's natural personality.

Identity distribution
Clean
6 · 22%
Classic
4 · 15%
Fluid
3 · 11%
Experimental
14 · 52%
dayscoffeeroaster.jpOn Cascara since May 2026
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27
Beans listed
12
Origin countries
Ethiopia · Colombia · Brazil · Rwanda · Burundi
20
Processes
nitrogen anaerobic natural · wet hulled · pineapple maceration infused · semi-washed · red honey
Recently added
Latest from this roaster.
Sign in to see palate-matched →
✦
Dona Nenem Decaf
Experimental · Brazil · 6w ago
ListedChecked 47d ago
○
Nyagishiru
Clean · Burundi · 6w ago
ListedChecked 47d ago
◇
Nyagishiru City Roast
Fluid · Burundi · 6w ago
ListedChecked 47d ago
Origins · 27 beans
Ethiopia6
Colombia4
Brazil3
Rwanda3
Burundi2
Kenya2
Ecuador2
Indonesia1
Guatemala1
Costa Rica1
Mexico1
China1
Processes · 27 beans
Nitrogen anaerobic natural2
Wet hulled1
Pineapple maceration infused1
Semi-washed1
Red honey1
Mountain water decaf1
Vanilla-infused oak barrel washed1
Carbonic maceration + thermal shock black honey1
Carbonic maceration + thermal shock washed1
Carbonic maceration1
Anaerobic natural2
Anaerobic natural swiss water decaf1
Infused co-fermentation1
Yeast-fermented washed (apricot infused)1
Triple-fermented washed1
Washed6
Honey1
Honey lactic fermentation1
Natural1
Natural mountain water decaf1
Bean catalog27 total
Experimental

Dona Nenem Decaf

BrazilAnaerobic Natural Swiss Water Decaf
ListedChecked 47d ago
Clean

Nyagishiru

BurundiWashed
ListedChecked 47d ago
Fluid

Nyagishiru City Roast

BurundiWashed
ListedChecked 47d ago
Classic

Alfinner Lintong

IndonesiaWet Hulled
ListedChecked 47d ago
Clean

Kaguyu Light

KenyaWashed
ListedChecked 47d ago
Fluid

Kilimbi

RwandaHoney
ListedChecked 47d ago
Clean

Vunga CWS A1 Top

RwandaWashed
ListedChecked 47d ago
Experimental

Shira Pineapple Maceration

RwandaPineapple Maceration Infused
ListedChecked 47d ago
Classic

Chire Nigussie Gemeda

EthiopiaNatural
ListedChecked 47d ago
Clean

El Injerto Bourbon

GuatemalaWashed
ListedChecked 47d ago
Clean

Venecia

ColombiaSemi-washed
ListedChecked 47d ago
Fluid

Al Valle Fidel

Costa RicaRed Honey
ListedChecked 47d ago
Classic

Guji Dari Decaf

EthiopiaNatural Mountain Water Decaf
ListedChecked 47d ago
Classic

Chiapas Decaf

MexicoMountain Water Decaf
ListedChecked 47d ago
Clean

Tamiru Tadesse Ambessa Lot 2024

EthiopiaWashed
ListedChecked 47d ago
Experimental

Vanilla Oak Barrel

ChinaVanilla-infused Oak Barrel Washed
ListedChecked 47d ago
Experimental

Guariroba Days Lot 02

BrazilCarbonic Maceration + Thermal Shock Black Honey
ListedChecked 47d ago
Experimental

Guariroba Days Lot 01

BrazilCarbonic Maceration + Thermal Shock Washed
ListedChecked 47d ago
Experimental

Idido Wachota Dark

EthiopiaAnaerobic Natural
ListedChecked 47d ago
Experimental

Idido Wachota Light

EthiopiaAnaerobic Natural
ListedChecked 47d ago
Experimental

Lemon Candy

ColombiaInfused Co-fermentation
ListedChecked 47d ago
Experimental

Apricot Punch

ColombiaYeast-fermented Washed (apricot Infused)
ListedChecked 47d ago
Experimental

La Marquesa

EcuadorCarbonic Maceration
ListedChecked 47d ago
Experimental

La Josefina

EcuadorTriple-fermented Washed
ListedChecked 47d ago
Experimental

Maguta Nitrogen

KenyaNitrogen Anaerobic Natural
ListedChecked 47d ago
Experimental

Aroma Nativo Geisha 354

ColombiaHoney Lactic Fermentation
ListedChecked 47d ago
Experimental

Nitrogen Jasper 0825

EthiopiaNitrogen Anaerobic Natural
ListedChecked 47d ago
Beans from Days Coffee Roaster

Days Coffee Roaster has 27 active beans in the Cascara catalog sourced from 12 origin countries (Ethiopia, Colombia, Brazil, Rwanda, Burundi, Kenya, Ecuador, Indonesia, Guatemala, Costa Rica, Mexico, China), processed nitrogen anaerobic natural / wet hulled / pineapple maceration infused / semi-washed / red honey / mountain water decaf / vanilla-infused oak barrel washed / carbonic maceration + thermal shock black honey / carbonic maceration + thermal shock washed / carbonic maceration / anaerobic natural / anaerobic natural swiss water decaf / infused co-fermentation / yeast-fermented washed (apricot infused) / triple-fermented washed / washed / honey / honey lactic fermentation / natural / natural mountain water decaf.

  • Dona Nenem Decaf — experimental-identity coffee from Brazil, anaerobic natural swiss water decaf process.
  • Nyagishiru — clean-identity coffee from Burundi, washed process.
  • Nyagishiru City Roast — fluid-identity coffee from Burundi, washed process.
  • Alfinner Lintong — classic-identity coffee from Indonesia, wet hulled process.
  • Kaguyu Light — clean-identity coffee from Kenya, washed process.
  • Kilimbi — fluid-identity coffee from Rwanda, honey process.
  • Vunga CWS A1 Top — clean-identity coffee from Rwanda, washed process.
  • Shira Pineapple Maceration — experimental-identity coffee from Rwanda, pineapple maceration infused process.
  • Chire Nigussie Gemeda — classic-identity coffee from Ethiopia, natural process.
  • El Injerto Bourbon — clean-identity coffee from Guatemala, washed process.
  • Venecia — clean-identity coffee from Colombia, semi-washed process.
  • Al Valle Fidel — fluid-identity coffee from Costa Rica, red honey process.
  • Guji Dari Decaf — classic-identity coffee from Ethiopia, natural mountain water decaf process.
  • Chiapas Decaf — classic-identity coffee from Mexico, mountain water decaf process.
  • Tamiru Tadesse Ambessa Lot 2024 — clean-identity coffee from Ethiopia, washed process.
  • Vanilla Oak Barrel — experimental-identity coffee from China, vanilla-infused oak barrel washed process.
  • Guariroba Days Lot 02 — experimental-identity coffee from Brazil, carbonic maceration + thermal shock black honey process.
  • Guariroba Days Lot 01 — experimental-identity coffee from Brazil, carbonic maceration + thermal shock washed process.
  • Idido Wachota Dark — experimental-identity coffee from Ethiopia, anaerobic natural process.
  • Idido Wachota Light — experimental-identity coffee from Ethiopia, anaerobic natural process.
  • Lemon Candy — experimental-identity coffee from Colombia, infused co-fermentation process.
  • Apricot Punch — experimental-identity coffee from Colombia, yeast-fermented washed (apricot infused) process.
  • La Marquesa — experimental-identity coffee from Ecuador, carbonic maceration process.
  • La Josefina — experimental-identity coffee from Ecuador, triple-fermented washed process.
  • Maguta Nitrogen — experimental-identity coffee from Kenya, nitrogen anaerobic natural process.
  • Aroma Nativo Geisha 354 — experimental-identity coffee from Colombia, honey lactic fermentation process.
  • Nitrogen Jasper 0825 — experimental-identity coffee from Ethiopia, nitrogen anaerobic natural process.
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