During harvest the purchase desk moves fast. The tanker arrives, a sample is taken, tasting is done and the price is discussed. An experienced taster catches defects, fermentation and ageing — those are real skills.
The one thing tasting cannot catch is a well-made blend. When refined oil or seed oil is mixed in at a low ratio the taste profile is largely preserved; if the oil is young and strongly aromatic, the gap closes further.
Staging the decision
- Tasting: for defects and quality grade; fast and free.
- Pre-screening: for purity doubts; at the desk, within minutes.
- Laboratory: only for batches that flag; the final decision.
Trying to do all three at once stops intake. Sequenced, each stage does its own job and laboratory cost falls only on suspect batches.
Tasting tells you about quality, measurement tells you about purity; neither replaces the other.
How to talk to the producer
A measurement result is not an instrument of accusation. In many cases the producer is unaware of the blend too — the oil reached them already mixed. Sharing the result makes it possible to look upstream together and does not damage a good relationship.
The decision has three outcomes
The decision at a purchase desk is not confined to "buy" or "don't". The third and often most sensible option is to renegotiate the price against the grade. That third route opens when you hold a measurement; without one, only the two extremes remain, and both strain the relationship.
Refusing costs you the supplier; accepting makes you pay the difference. Pricing to grade does neither: the purchase goes ahead and the difference lands where it belongs.
Who measures, who decides
Having the same person take the measurement and make the purchase decision is a common weakness in the field. Separating them is not always possible; where it is not, the record of the measurement should at least land somewhere independent of whoever decides.
Once the record is independent, a review after the fact becomes possible. A year later, the answer to "why did we buy this batch at this price" sits in the record rather than in someone's memory.
What to tell the supplier
Sharing the measurement with the supplier repairs the relationship rather than damaging it. Where results are shared the same day, the supplier can correct their own process; where they are not, the same deviation arrives again with the next shipment.
Measurement is not there to weed out suppliers but to put the relationship on a number.