p-Cymene
Also written para-cymene, p cymene
Quick answer
A dry, woody, faintly solvent-like terpene that sits under cumin, oregano and nigella — rarely the point of a spice, and often the reason an old one smells harsh.
What it does
p-Cymene contributes a dry, thin, woody note with a faint turpentine edge. It is seldom pleasant on its own and is rarely what a spice is valued for; its role is structural, giving cumin and nigella part of their dusty, earthy character and supporting the phenols in oregano and thyme. It is also one of the products formed when other terpenes oxidise, which is why it becomes more prominent as a spice ages and why stale cumin smells sharper and more solvent-like rather than simply weaker.
How it behaves when cooked
Four properties of the molecule, and what they mean at the stove.
- Volatility
- moderate
- Fat solubility
- high
- Water solubility
- low
- Heat stability
- moderate
The useful consequence of p-cymene is diagnostic rather than culinary. Because it accumulates as a spice oxidises while the pleasant aromatics disappear, a spice whose smell has shifted from rounded to sharp and slightly solvent-like has not merely faded — it has changed, and toasting will not bring it back. This is the chemical basis of the advice on the storage pages that a spice smelling harsh is further gone than one smelling faint.
Spices that carry it
Recorded on the compound rather than on each spice, so the two cannot disagree.
- CuminMajor component
- AjwainContributing component
- Black cuminContributing component
- EpazoteContributing component
- Mexican oreganoContributing component
- NigellaContributing component
- OreganoContributing component
- SavoryContributing component
- ThymeContributing component
- Za'atar herbContributing component
Questions this page answers
- what is p-cymene
- what does p-cymene do
- which spices contain p-cymene
- what is para-cymene
- what is p cymene