Cambodian Coffee Sample Roasting Protocol: How to Compare Lots Fairly

Comparing Robusta Cambodia samples requires a repeatable roast method. If every sample receives a different heat treatment, buyers may end up comparing roast styles rather than green coffee quality.

Standardize the first evaluation

Use the same sample roaster, batch size, preheat routine and target development approach for initial comparisons. Record time, temperature references, color or other repeatable indicators available in the roastery.

Avoid optimizing too early

The first roast should reveal the coffee, not rescue it. Once a lot passes the baseline evaluation, the roaster can explore profiles designed for espresso, filter, blend or other applications.

Keep enough sample for confirmation

One roast can be misleading. Retain enough green coffee to repeat the evaluation and, where possible, compare it with a second cupper or another day.

Record for each sample

• Lot ID
• Green moisture and density if available
• Batch size
• Roast time
• Development observations
• Weight loss
• Rest time before cupping
• Sensory notes

A disciplined protocol makes Robusta Cambodia sourcing decisions more defensible and helps buyers identify whether a difference comes from the coffee or from the test.

Related guide

For the broader origin, quality, Mondulkiri and sourcing context, see the Robusta Cambodia complete buyer guide.