Raw cashew nut quality cannot be assessed reliably from appearance alone. For international buyers and processors, three commercial indicators are central to evaluating a shipment: outturn, kernel output ratio (KOR) and nut count.
These measurements help estimate recoverable kernel volume, processing performance and the suitability of a lot for a particular factory or end market. They must, however, be interpreted alongside moisture, defects, crop origin and sampling methodology.
What is raw cashew nut outturn?
Outturn is the estimated weight of usable kernels obtainable from a standard quantity of raw cashew nuts (RCN). In international trade, it is commonly expressed as pounds of kernel per 80-kilogram bag of RCN.
For example, an outturn of 50 means that an 80-kilogram quantity of raw nuts is estimated to produce 50 pounds of kernel under the agreed cutting-test method. As 50 pounds is approximately 22.7 kilograms, this represents an estimated kernel recovery of about 28.3% by weight.
Common commercial outturn levels often fall within a broad range from the mid-40s to the low-50s, although actual results vary by origin, season, handling and lot condition. A higher outturn generally indicates more recoverable kernel per tonne of raw material.
Outturn should not be interpreted as guaranteed factory yield. Industrial recovery also depends on:
- Shelling technology and machine settings
- Steam cooking or roasting control
- Drying and humidification practices
- Kernel breakage during shelling and peeling
- Labour skill and process supervision
- Storage condition before processing
Outturn is therefore a raw-material quality indicator, while final kernel yield is an operational outcome.
What does KOR mean?
KOR means kernel output ratio. In much of the cashew trade, KOR and outturn are used interchangeably because both describe the expected kernel weight from an 80-kilogram quantity of RCN.
The terminology can nevertheless create confusion. Some counterparties use “outturn” for the full cutting-test result and “KOR” only for the calculated recoverable good kernel. Others may apply different rules to spotted, immature, scorched or otherwise defective kernels.
A sales contract should therefore define more than a headline KOR figure. It should specify:
- The sampling and sample-reduction procedure
- The weight of the laboratory sample
- How nuts are opened and kernels classified
- Which kernel categories count as fully good, partially accepted or rejected
- Whether the result is reported in pounds per 80 kilograms
- The inspection point and responsible surveyor
- Any tolerance and claim procedure
The mathematical conversion is straightforward. To express KOR as an approximate kernel percentage, multiply the KOR figure by 0.4536, divide by 80 and multiply by 100. A KOR of 48 equates to about 27.2% kernel by weight, while 52 equates to about 29.5%.
These percentages are theoretical cutting-test recoveries, not commitments regarding whole-kernel yield or finished grades.
How a cutting test is performed
A representative sample is drawn from the lot and reduced to the agreed test quantity. The nuts are counted, weighed and opened individually. Kernels are then separated and classified according to their condition.
Depending on the agreed protocol, sound kernels receive full weight, while partially defective kernels may be discounted. Empty nuts, badly damaged kernels and unusable material are excluded. The accepted kernel weight is then converted to the standard KOR basis.
The greatest risk is often not the arithmetic but the sample. RCN cargoes can vary between bags, warehouse positions and loading periods. Samples taken only from accessible bags may not represent the full consignment.
Buyers should favour systematic sampling across the lot, sealed reference samples and independent inspection where required by the contract.
What is nut count?
Nut count is the number of raw cashew nuts in one kilogram. It is primarily an indicator of physical nut size: a lower count generally means larger nuts, while a higher count means smaller nuts.
Nut count affects factory throughput and processing behaviour. Larger nuts may be preferred by processors targeting larger kernel grades, but size alone does not establish kernel quality. A large shell can contain a small, shrivelled or defective kernel. Conversely, a smaller nut may have good kernel fill and a competitive KOR.
For this reason, nut count must always be reviewed with outturn and defect observations. Two lots with the same count can produce different kernel recoveries, and two lots with similar KOR can have different size distributions and processing characteristics.
Factors that influence KOR and nut count
RCN quality develops before harvest and can deteriorate afterward. Important variables include:
- Variety, growing conditions and stage of crop maturity
- Timeliness of collection after nuts fall
- Separation of nuts from the cashew apple
- Drying quality and moisture uniformity
- Exposure to rain or humid storage
- Presence of immature, void, oily, mouldy or insect-damaged nuts
- Mixing of crop periods or production areas
- Warehouse duration and ventilation
Moisture requires particular attention. Excess moisture increases shipment weight without adding kernel value and can encourage deterioration. Over-drying may also affect processing behaviour. Contract specifications should state the agreed moisture basis and test method.
How buyers should compare offers
A lower-priced RCN lot is not necessarily the lowest-cost processing input. Buyers should compare offers on expected recoverable kernel value rather than price per tonne alone.
A practical evaluation should consider:
- Contract KOR and recent inspection results
- Nut count range and size consistency
- Moisture and defect profile
- Sampling reliability
- Crop year and storage history
- Origin traceability and lot segregation
- Loading condition and shipment timing
- Expected whole-kernel and breakage performance in the buyer’s plant
Processors can also use their own historical conversion data to adjust cutting-test KOR for factory efficiency. This produces a more realistic estimate of finished kernel output and procurement cost.
Buying Nigerian RCN with clearer specifications
Nigeria’s cashew-producing regions can supply lots with different size, moisture and outturn characteristics across the season. Effective procurement requires origin-level aggregation, disciplined drying, lot segregation and transparent pre-shipment assessment.
Kudalgroup Agro Ventures sources Nigerian agricultural commodities at origin and supports international buyers with commercially relevant specifications and shipment planning. Buyers are invited to request a quotation for Nigerian raw cashew nuts, including their preferred KOR, nut count, moisture, quantity, delivery terms and destination port.