The receiving area and raw material before production

The first control point isn't the roaster — it's where raw material is received. Green beans can carry dust, foreign matter, or leftover material from harvest, transport, and bagging. If the receiving area isn't separated and properly managed, that material can travel deeper into the facility.

The FAO stresses the risk of re-contamination when already-cleaned coffee comes back into contact with dust, husk, or dirty packaging. So hygiene at this point is also about zoning, movement flow, and how raw material is placed.

The roasting area, cooling, and spots where residue accumulates

A roaster generates dust, silverskin, and other roasting by-products. Depending on the equipment's design, this material can build up in ducts, collection areas, or hard-to-reach spots.

The FDA treats equipment design, maintenance, and hygiene as part of suitable production conditions. For a roasting facility, what matters is identifying spots capable of holding residue and building an inspection schedule suited to actual usage.

The cooling area also deserves attention, since that's when the roasted beans meet the environment before the next step.

The grinder and surfaces in direct contact with the finished product

The grinder is another control point, since roasted coffee passes through this equipment in its near-finished state. Fine dust and coffee oil can cling to various spots; once residue builds up over time, cleaning stops being as simple as wiping a flat surface.

Seeing oil doesn't automatically mean the machine is dirty, since roasted beans naturally contain lipids. What matters is the amount of residue, its age, where it accumulates, and its potential to affect the next batch.

A cleaning schedule should be based on product volume, actual buildup levels, and the equipment manufacturer's guidance.

Cleaning tools, chemicals, and records

A facility might clean its equipment properly but still create risk if it uses the wrong tools or stores chemicals in an unsuitable spot. The FDA places chemical control, hygiene, training, and record-keeping among the foundational programs of a control system.

Cleaning tools should be distinguished by purpose and area. Chemicals need to be clearly identified and kept separate from raw material, packaging, and finished product. Cleaning also needs to leave enough of a trace to know what was done, when, and by whom.

Looking at the entire facility through its contact points and product flow is far more useful than just drawing up a list of surfaces to wipe.

References

• FDA — Current Good Manufacturing Practices for Food and Dietary Supplements
• FDA — HACCP Principles & Application Guidelines
• FAO — Global Perspectives in Coffee Quality Improvement