Tepi Town, Sheka Zone, Southwestern Ethiopia
Chemo originates in Tepi Town in the Sheka Zone of Southwestern Ethiopia — a region that sits within one of the primary centres of Coffea arabica's natural genetic diversity. The forest ecosystems of this region include wild coffee populations that predate cultivation. The communities who live and farm here have a relationship with the coffee plant that extends far beyond commercial bean production.
The Awoke et al. 2026 study was conducted between August and October 2025. It covered 64 households and 16 key informants using structured interviews, participant observation, focus group discussions, and botanical specimen collection. The study area includes both the Tepi Town community and the surrounding rural areas where Chemo preparation is embedded in daily household life.
Ethnobotanical context
Coffea arabica and the culture of the leaf in Southwestern Ethiopia
The Sheka Zone and surrounding regions are among the areas where Coffea arabica is believed to have evolved as a species. Wild coffee populations exist in forest remnants throughout this region. For the communities who live alongside these forests, coffee is not primarily an export commodity — it is a plant that has been part of the food environment for as long as community memory extends.
The use of coffee leaves as a beverage ingredient represents a form of utilisation knowledge that predates the global spread of coffee as a bean-based drink. In regions where the full plant is familiar — where people have observed how the leaves smell when crushed, how they respond to heat, what they taste like in water — the development of leaf-based beverages is a natural extension of plant knowledge rather than a discovery.
The spice blend in Chemo is also ethnobotanically significant. It represents accumulated knowledge about which local plants combine well with coffee leaf, how they moderate the brew's intensity, and how they add medicinal associations that make the beverage culturally valuable beyond its flavour. The consistency of the core spices across households suggests that this knowledge has been tested and refined over many generations.
Cultural and social significance
What Chemo means in Tepi Town household and community life
The Awoke et al. study places particular emphasis on Chemo's social role. This is documented not as background colour but as a central finding: Chemo is a hospitality drink, not a personal one. Its preparation marks occasions — visits, ceremonies, communal gatherings. Making Chemo for someone is an act of welcome.
This social function is reflected in how Chemo is served. It comes with food — always. The research documents consistent pairing with starchy foods, and community understanding is that the two together constitute a complete offering. Chemo alone would be incomplete; food alone would be ordinary.
The study documents Chemo's role in religious ceremonies and communal activities alongside its everyday household function. This dual role — daily beverage and ceremonial drink — suggests a degree of cultural integration that few beverages in any tradition achieve.
Full method documentation
Three leaf preparation methods — complete record
Method 1 — Roasted leaves · 55.8% of households · most common
Leaves are roasted over medium heat until they turn golden-brown. This takes 5–10 minutes of careful attention. The colour is the signal — golden-brown, not dark brown, not black. Over-roasting produces acrid flavours; under-roasting misses the Maillard compounds that make this method distinctive.
Leaves are crushed immediately while still warm — the heat has made them brittle and the aromatic compounds created by roasting are most volatile when hot. The crushed warm leaves go directly into boiling water with the spice blend. Brew time: 15–30 minutes depending on intensity desired. Strain completely. Serve hot with food.
Method 2 — Lightly heated leaves · less common
Leaves are heated gently — 5 minutes over low heat — until warm but not browned. No Maillard reaction occurs at this temperature. The result is a more delicate preparation: warmer than fresh but without the roast character. Used by households who prefer lighter flavour or who are making Chemo for someone who finds the roasted version too intense.
Method 3 — Fresh leaves · Majang community preference
No heat applied to leaves. Tender tips are picked, washed, and crushed immediately. Brewed directly. The flavour is grassy, fresh, bright — the most green-forward of the three methods. This is the Majang people's documented standard preparation and is described as producing the freshest, most immediate expression of the leaf's natural character.
Complete ingredient record
Full botanical documentation of Chemo ingredients
All ingredients below are documented in Awoke et al. 2026. Quantities are drawn from the study's documented averages across 64 households. Scientific names are provided where documented.
| Ingredient | Quantity per litre | Notes |
|---|---|---|
| Base — all methods | ||
| Coffee leaves, freshBuna KitelCoffea arabica L. | 164g fresh · 39g dried | Young tender tips preferred. Prepared by roasting, heating, or using fresh depending on method. Always strained out — never consumed. |
| WaterWoha | 1000 ml | Boiled. Leaves and spices added together after initial leaf preparation. |
| Aromatic leafy herbs — always present | ||
| BasilBesobilaOcimum basilicum L. | ~24g | Fresh leaves. Sweet-herbal. One of the most consistently present across all households. |
| KoseretLippia adoensisLippia adoensis Hochst. ex Walp. | ~19g | The signature Ethiopian beverage herb. Distinctive aroma unlike any common Western spice. If available, essential. |
| LemongrassTejisarCymbopogon citratus (DC.) Stapf | ~22g | Fresh or dried stalks. Bright citrus-floral. Lifts the heavier spiced base notes. |
| Root, seed and bark spices | ||
| GingerJingibilZingiber officinale Roscoe | ~18g | Fresh or dried. Core warming spice. Associated with digestion and recovery in Ethiopian herbal tradition. |
| Ethiopian cardamomKorerimaAframomum corrorima (Braun) Jansen | documented, quantity varies | Native to Ethiopia. Earthier and more complex than green cardamom. Adds warmth and depth distinct from imported substitutes. |
| CinnamonQerfaCinnamomum verum J.Presl | documented | Bark, not powder. Sweet-warm background note. |
| CloveQerenfudSyzygium aromaticum (L.) Merr. & L.M.Perry | documented | Intense and aromatic. Small quantities only — can dominate if overused. |
| Flavour modifiers | ||
| Black pepperKundo berberePiper nigrum L. | documented | Heat and sharpness. Present in most households. Cuts through the heavier aromatic base. |
| Bird's eye chilliMitmitaCapsicum frutescens L. | documented | Sustained heat. Used alongside black pepper for layered warmth. |
| SaltChew | ~8g | Suppresses bitterness. Amplifies aromatic compounds. Consistent with traditional leaf beverage practices globally. |
Challenges and pressures on the tradition
What the research identifies as threats to Chemo knowledge
The Awoke et al. study is explicit about the pressures on Chemo as a living practice. These are documented, not speculative.
Evidence check
What the research establishes and what it does not
| Claim | Status |
|---|---|
| Chemo is a coffee leaf beverage prepared with spices, consumed in Tepi Town, Sheka Zone, Southwestern Ethiopia | ✓ Directly documented |
| 64 households and 16 key informants studied, August–October 2025 | ✓ Directly documented |
| All 64 households used spices in every preparation | ✓ Directly documented |
| 55.8% of households use roasted leaf preparation as standard | ✓ Directly documented |
| Three preparation methods documented: roasted, heated, fresh | ✓ Directly documented |
| Always served with food; never served alone | ✓ Directly documented |
| Social and hospitality function in communal activities and ceremonies | ✓ Directly documented |
| Women are primary custodians of preparation knowledge | ✓ Directly documented |
| Majang people documented as using fresh-leaf method | ✓ Directly documented |
| Chemo does not compete with commercial coffee bean production | ✓ Directly documented — uses leaves, not beans |
| Roasting creates new flavour compounds via Maillard reaction | ⚠ Chemically established as a general principle; specific compound analysis of Chemo leaves not yet published |
| Chemo has measurable health or nutritional benefits | ⚠ Not established in this study — no clinical measurement conducted |
| Chemo has a documented multi-century history | ⚠ Not established — study is contemporary ethnography; temporal depth not documented |
| Specific health claims for individual spice ingredients as used in Chemo | ✗ Not established — general herb knowledge exists but specific effects in this preparation are not documented |
Source
Research basis
Primary source
Awoke, A., Gizaw, M., and Tilahun, A. (2026). Traditional preparation and cultural significance of chemo, an indigenous coffee-leaf beverage in Southwestern Ethiopia. Journal of Ethnobiology and Ethnomedicine, Vol. 22, Art. 25. DOI: 10.1186/s13002-026-00863-y.Study period: August to October 2025. Location: Tepi Town, Sheka Zone, Southwestern Ethiopia. Participants: 64 households and 16 key informants. Method: structured interviews, participant observation, focus group discussions, botanical specimen collection.