What Is a
Micro-Lot Coffee?

What Defines a Micro-Lot?

A micro-lot is a small, precisely traceable batch of green coffee that can be traced to a specific farm, farmer group, or defined section of a cooperative washing station — and is kept separate from the main crop throughout processing, drying, milling, and export. The defining characteristics are size (typically under 300 bags, often much less) and traceability (you know exactly where it came from).

There is no official industry definition of a micro-lot minimum size, which has led to some misuse of the term. Genuine micro-lots are distinguished by the specificity of their sourcing — a named cooperative, a defined plot, a single producer — rather than simply by being small. A 5,000kg lot from an unnamed "Tanzania washing station" is not a micro-lot regardless of its size.

Why Micro-Lots Command Premium Prices

Micro-lot coffee is more expensive than commodity or standard specialty coffee for three interconnected reasons: the cost of separation, the value of traceability, and the quality premium.

Cost of separation: Keeping a small lot physically separate from surrounding production throughout the supply chain — separate drying beds, separate storage, separate milling, separate bagging — requires labour, space, and attention that isn't needed for bulk lots. These costs are real and are reflected in price.

Value of traceability: Roasters pay a premium for the ability to tell their customers exactly where the coffee came from. "From a smallholder cooperative on the eastern slopes of Kilimanjaro" is more valuable as a retail story than "Tanzania AA." This storytelling value drives demand and justifies premium pricing.

Quality premium: Micro-lots tend to be selected for quality — they typically represent the best-performing plots or best-sorted cherry from a given harvest, not a representative cross-section of the whole crop. This selection effect means micro-lots often outperform larger lots from the same cooperative on the cupping table.

Micro-Lot vs Single Origin vs Direct Trade

These three terms are often used interchangeably but describe different things. Single origin means the coffee comes from one country or region — a broad claim that tells you nothing about traceability. Direct trade describes the sourcing relationship — how the buyer connects to the producer. Micro-lot describes the lot itself — its size, traceability, and selection process.

A coffee can be: single origin but not a micro-lot (Tanzania blend from multiple cooperatives); a micro-lot but not direct trade (a small lot purchased on the auction); or direct trade and a micro-lot (a specifically sourced small lot purchased through a direct relationship — this is the highest traceability combination and what premium specialty buyers should be seeking).

How to Buy Micro-Lots Well

The key questions when evaluating a micro-lot offer: Can the supplier name the specific cooperative, washing station, or farmer group? What is the lot size and how many bags are available? What is the cupping score and who conducted the evaluation? Is the traceability documented and verifiable? And — importantly — what does it cost to arrive at your roastery?

Micro-lots are available in limited quantities, and good ones sell quickly. Build relationships with suppliers who can notify you when new lots arrive before they're publicly listed. Request samples immediately — the window between "available" and "sold out" for top micro-lots can be days rather than weeks.

Be prepared for occasional gaps in availability. Micro-lots are seasonal by nature — a lot you sourced last year may not be available this year if the harvest was smaller, the cooperative committed to a different buyer, or quality didn't meet the standard. This is normal, and building a programme that can absorb seasonal variation (by having two or three trusted origins rather than depending on a single lot) is good sourcing practice.

Micro-Lots from Kilimanjaro Beans

All of our Tanzania lots are sourced as micro-lots — specific cooperative lots from named washing stations in Kilimanjaro, Songwe–Mbozi, and Mbinga, kept separate throughout the supply chain and evaluated by our in-country Q-Grader before export approval. Our minimum order is 50kg per lot, making genuine micro-lot traceability accessible to independent roasters at realistic scale.