Coffee supply chain

A specialty coffee is usually sold on two facts: a farm and a flavour. Everything between those two facts is this note. Once dry milling has hulled, sorted and bagged the green coffee, the lot still has to cross a border, an ocean and a customs desk before anyone roasts it — and that stretch takes longer, costs more and changes more hands than most people buying the bag would guess.

The short version: farm → wet mill → drying → dry mill → exporter → port → ocean → importer’s warehouse → roastery. Each arrow is a change of custody, and almost every one of them is a place where traceability can quietly be lost.

The nodes, in order

Node	What it does	Where this wiki covers it
Farm	Grows and picks cherry	Selective picking · Coffee cherry
Wet mill / beneficio	Pulps, ferments and washes cherry into parchment, or lays it out whole to dry	Washed process · Natural process · Honey process
Dry mill	Hulls the shell off, sorts by size, weight and colour, bags the green coffee	Dry milling · Wet hulling
Exporter	Buys the milled lot, files the paperwork, loads the container	this note
Ocean freight	Moves the sealed container from origin port to destination port	this note
Importer	Clears customs, warehouses the coffee, carries the inventory risk	Green coffee buying
Roaster	Buys in the quantities it can actually use	Coffee roasting

A cooperative often collapses the first three nodes into one, because a two-hectare farm cannot fill a container by itself — see Producer cooperatives. A large estate such as Hacienda La Esmeralda or Daterra may collapse the first four.

The exporter: the node nobody can skip

The exporter is the least glamorous actor in coffee and the only one that is, in most producing countries, legally unavoidable. Royal Coffee, a US importer, states it flatly: “any and all outgoing coffee from a country of origin must be processed by an Exporter.”¹ The role “may include dry milling, and in some cases even wet milling,” but its core is commercial and administrative: exporters “facilitate logistics, provide quality analysis and control, file paperwork with regulatory agencies, provide insurance and financing, warehouse and trade coffee.”¹

In plain terms, an exporter is a licensed entity that is allowed to sell coffee out of the country and is trusted by the state to do the paperwork — export registration, phytosanitary certification (a government document saying the goods carry no plant pests), and customs declarations.² Commercially it buys from producers and cooperatives and sells to importers.³

This is why so many origin businesses in this wiki are described as exporters rather than farms: Daye Bensa in Ethiopia and traders like Sucafina hold the licence, own the mill, and are therefore the entity a foreign buyer can actually contract with. A farmer without an exporter has coffee, not exports.

The importer: the last step before the roaster

At the other end sits the mirror image. Royal Coffee again: “all coffee coming into the United States (and most other places), regardless of how direct a relationship is, will pass through an importer,” which is “typically the last step before reaching a roaster.”¹

That sentence quietly punctures a common misreading of Direct trade. A direct relationship is about who negotiated the price and who knows whose name — not about who physically shipped the bags. The container still moves through an exporter at origin and an importer at destination in the overwhelming majority of “direct” purchases, exactly as Green coffee buying describes.

The importer’s real product is finance and patience: it pays for coffee months before a roaster wants it, holds it in a warehouse, carries the risk that it goes stale or fails a cupping, and sells it on in pallet-sized pieces.² Small roasters exist because someone else is willing to own a container.

The 60-kilo bag

The unit of the entire trade is a sack. World coffee statistics are published in 60-kg bags — the International Coffee Organization reported 12.38 million bags exported in May 2026, against 12.78 million in May 2025⁴ — and the physical bag is the reason the statistical one exists.

Nordic Approach, a specialty importer, describes current specialty practice: coffees are “packed in 60–70 kg jute bags with GrainPro liners or vacuum-sealed bags to protect moisture and prevent contamination,” and the sealed containers are “inspected, sealed, and tracked to local ports, such as Djibouti, Mombasa, or Dar Es Salaam.”⁵

Two words worth unpacking:

• Jute is the traditional woven sack. It breathes, which is good for a live agricultural product, and it offers no moisture barrier at all, which is bad on a ship crossing the tropics where a steel box heats by day and sweats by night.⁶
• GrainPro is a hermetic plastic liner that goes inside the jute bag and seals the coffee off from ambient humidity. A vacuum pack goes further, pulling the air out entirely. Both cost money per bag, and both are effectively standard for lots expensive enough to justify it — which is most of the coffee this wiki writes about.

That choice is the physical expression of the whole specialty argument: commodity coffee ships in a breathable sack and is expected to fade; a competition lot ships in a sealed one because it is being asked to taste in a roastery the way it tasted at the mill.

Quality control after the mill

Milling is not the last checkpoint. Nordic Approach notes that “after milling, pre-shipment cuppings ensure the coffee’s quality hasn’t changed during hulling or bagging” — a second cupping performed after the coffee is in its export bag, not before.⁵ It exists because hulling is violent, bagging is hot, and a lot that scored well in parchment can arrive at the ship different.

The destination-side equivalent is arrival sampling: the importer cups again on landing and measures moisture and water activity (the free, microbially available water in the bean, as opposed to its total water content — the number that predicts whether mould can grow). Comparing arrival readings against the mill’s own readings is how a buyer works out whether a coffee was shipped tired or got tired at sea.⁶

The clock and the cost

To verify

The transit and cost figures below come from a single AI-generated source. The research report behind this note quotes Pour Over Wiki — a site that describes itself as “an AI-assisted coffee encyclopedia built and curated by Seth Cysewski, a Morning Wines production” — for four numbers: that ocean freight runs four to six weeks in a 20-foot container across the Pacific or Atlantic; that total transit “from a Kenyan dry mill to a roastery in London, Minneapolis, or Tokyo typically runs eight to fourteen weeks”; that logistics “typically add 0.30 to 0.80 per pound to the cost of green coffee”; and that “progressive importers and roasters now track lot-level moisture and water activity readings at intake and compare them against mill readings at origin.”⁶ The wording was confirmed at the source, so the site does say these things — but an AI-assisted wiki is not an independent authority, no second source consulted gives a figure, and none of it comes from a shipping line, a port authority or a trade body. The practice described in the last claim is corroborated in principle by Nordic Approach’s pre-shipment cupping regime;⁵ the numbers are not corroborated by anything. Treat the shape as plausible and the digits as unverified.

If those figures were right, the arithmetic would matter a lot. On a coffee bought at $3.00/lb FOB — Free On Board, the price loaded at the export port, see Green coffee buying — thirty to eighty cents of logistics is a 10–25% addition before the roaster has done anything.⁶ On a Best of Panama lot at ten times that price, the same freight is a rounding error. Shipping is regressive: it punishes cheap coffee hardest, which is one more structural reason origins push toward premium lots.

The route on the ground

To verify

The first-mile and port detail could not be re-read at the source. The research report cites Maersk, a global logistics operator, for the shape of the Latin American journey: first-mile transport from farm to processing station by trucks, small carriers or boats in remote areas; consolidation at cooperatives, warehouses or consolidation centres; containerisation and departure from major ports including Santos in Brazil and Buenaventura in Colombia; then inland trucking and rail at destination, with last-mile distribution and even cold-chain handling for specialty lots.⁷ The Maersk article timed out on every attempt to fetch it for this note, so none of it was verified at source. The port names are unsurprising — Santos is Brazil’s main coffee port by long convention — but they are recorded here as one logistics company’s account, not as confirmed fact.

Why it matters

• It is where traceability is won or lost. A lot that survives the dry mill as a named micro-lot can still disappear into a blended container, a shared warehouse bin, or an importer’s “Ethiopia G1” tank. Every claim on a bag about this farm, this picking is a claim that somebody kept the paperwork and the pallets separate through six changes of custody.
• It explains the gap between farm gate and shelf price. The auction headline is FOB at origin. The café price includes milling, bagging, trucking, freight, duty, warehousing, financing, roasting and rent. Premiumisation and Direct trade are both, at bottom, arguments about how that stack is divided.
• It is why fresh crop arrives when it does. A roaster advertising “new arrivals” from Kenya or Ethiopia is announcing the end of a months-long logistics chain, not a harvest date. Green coffee ages in transit and in the warehouse; see Coffee freshness and degassing for what happens after roasting, which is a much shorter clock than this one.
• It is the reason auctions need exporters too. A Cup of Excellence or Best of Panama winner is bought by a buyer on another continent and still has to be milled separately, bagged, documented and shipped like any other lot — see Green coffee auctions.

To verify

Whether competition lots are separately milled and bagged as a rule. The research report states this as standard practice for Cup of Excellence and Best of Panama lots, then concedes in its own text that it is an “informed inference” drawn from general specialty milling practice rather than from any auction’s published rules — and that no Best of Panama document was consulted at all. This wiki’s Dry milling note reaches the same dead end from the other side: competition records publish farm, variety, altitude and process, and do not publish mill parameters. Keeping a winning lot separate is obviously in everyone’s interest; that it is a rule is not established here.

To verify

“About 80% of the world’s coffee comes from smallholdings of two hectares or less.” The report supports this with two commercial blogs — a roaster’s trade explainer² and a subscription club’s guide, which separately describes growers on 1–2 hectare farms⁸ — which are not independent enough to count as two sources, and neither cites a census or an FAO dataset. The direction is not in dispute and this wiki’s Producer cooperatives note is built on the same premise, but the specific percentage should be sourced to a statistical body before it is repeated as fact.

Related

• Dry milling — the step immediately before this one, and where the export bag is filled
• Green coffee buying — the money side of the same chain: FOB, farm gate, spot, forward, auction, direct
• Direct trade — the relationship model that still runs through these same containers
• Producer cooperatives — how smallholders reach a container at all
• Green coffee auctions · Cup of Excellence · Best of Panama — the lots with the most to lose in transit
• C-market · Premiumisation · Buying consortium — what the price at the far end is built from
• Sucafina · Daye Bensa — a trader and an origin exporter, described from the inside
• Green coffee grading · Cupping · Q Grader — how the lot is described on the documents that travel with it
• Coffee roasting · Coffee freshness and degassing — what happens once the chain ends
• International Coffee Organization — the body that counts all of it, in 60-kg bags

Official links

• Official site — International Coffee Organization

Footnotes

1. Royal Coffee — Directing Trade Through The Supply Chain — US green coffee importer; confirmed via WebFetch; source of the mandatory-exporter rule, the exporter’s listed functions, and the importer-as-last-step quotes ↩ ↩² ↩³

2. Dabov — Coffee Trade Explained: Supply Chain, Pricing & Direct Trade — roaster/importer blog; cited via the research report; source of the export documentation list, the importer’s financing role, and the flagged 80% smallholder figure ↩ ↩² ↩³

3. Royal New York — The Importance of Exporters in the Coffee Supply Chain — importer; cited via the research report, not independently fetched ↩

4. International Coffee Organization — intergovernmental body; confirmed via WebFetch; source of the May 2026 world export volume in 60-kg bags ↩

5. Nordic Approach — Grading, Milling & Exporting Specialty Coffee — specialty importer; confirmed via WebFetch; source of the 60–70 kg jute / GrainPro / vacuum packing, the pre-shipment cupping practice, and the East African port list ↩ ↩² ↩³

6. Pour Over Wiki (a Morning Wines production) — Green Coffee Logistics — self-described AI-assisted encyclopedia; wording confirmed via WebFetch, but the source is not authoritative; all figures drawn from it are flagged above ↩ ↩² ↩³ ↩⁴

7. Maersk — The global journey of Latin America’s coffee — global logistics operator; fetch timed out on repeated attempts, so cited via the research report only ↩

8. Atlas Coffee Club — From Bean to Cup: How the Coffee Supply Chain Works — subscription club blog; cited via the research report; source of the 1–2 hectare grower description and the stage-by-stage actor list ↩