The freshly harvested nut is still protected by its green husk and holds moisture. Milling is the stage that transforms that field nut into a clean, dry, ready product, keeping intact the quality achieved in the field. At Culpan we approach milling with the same calm we apply to coffee: every step is done at the right moment, with no shortcuts, because we know that a hasty decision at this stage can undo the patient work of many years in the field. The goal is always the same: that the kernel reaches the consumer with all the flavour and texture the tree gave it.

The Santiaguito volcano with a fumarole above the Culpan farm

Husking and drying

Once collected, the macadamia nut first goes through husking: the outer green husk is removed to reveal the nut with its hard shell. Doing this soon after harvest helps preserve the freshness and quality of the kernel, since the green husk retains moisture and, if left too long, can favour the appearance of fungi or darkening of the fruit.

Next comes drying, one of the most important stages of the process. The nut is dried gradually to reduce its moisture to the right level for preservation, around 10 percent in the inner kernel. We aim for a slow decrease, with no temperature shocks, so the kernel does not shrink abruptly or lose its characteristic texture. This patient, controlled drying is what ensures a crunchy kernel of good texture, stable flavour and a longer shelf life once stored.

Quality sorting

With the nut now dry, it is time for sorting. The nuts are separated by size and by their inner condition, and those that do not meet the farm's standards are set aside, so that only the best macadamia continues on its way. The process recognises different visual grades: whole nuts, halves and fragments, each with its own destination within the product's value chain.

This careful sorting is Culpan's final quality filter. It is the same demand the family has applied to coffee for five generations, now placed at the service of macadamia: nothing leaves the farm without passing the attentive eye of those who grow it. The selected nuts are stored under low humidity and stable temperature, in clean and well-ventilated spaces, so the product keeps its qualities until the moment it reaches its final destination.

The same commitment as always

Macadamia milling follows the same principles that guide Culpan in everything it does: respect for the product, respect for the people who work the farm and respect for the environment surrounding the Santiaguito volcano. The green husk removed during husking returns to the field as organic compost, within the same composting programme that reuses coffee pulp and pruning remains, closing a cycle that few farms can show in such a complete way.

Every nut that leaves the mill carries the story of a patient crop: two years in the nursery, years of growth in the field, a careful harvest done by hand from the ground, and a final process done without haste. That is the Culpan promise, from bean to nut: a product that stands out not only for its quality, but for the consistency of a farm that, for five generations, has understood agriculture as a long-term commitment to the land, to the crop and to the people.

Learn more about Culpan

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