Kachi ghani means oil pressed slowly in a ghani, a traditional mill, without adding heat. The term is used mostly for mustard oil in north and east India. Cold-pressed is the broader English term for oil pressed at low temperature and not refined.
Both names describe a method, not a guaranteed quality. Two kachi ghani oils can differ a lot in pungency, colour and acidity.
How a ghani works
A ghani is a large mortar with a rotating pestle. Traditionally it was turned by a bullock. Today most ghanis are driven by an electric motor. The wooden version is called a lakdi ghani in Hindi and a chekku in Tamil Nadu.
The slow grinding releases oil gradually. Friction warms the paste a little, but far less than a high-speed expeller. The oil is then left to settle and is filtered through cloth or a filter press.
Some mills sell oil from modern low-speed expellers as cold-pressed. That can be legitimate, but it is not the same as a wooden ghani. If your label says wood-pressed, see the press yourself.
Why buyers want it
- Stronger natural flavour and aroma, which matters for mustard and sesame oil in traditional cooking.
- No chemical solvents or refining, which suits natural and clean label positioning.
- Familiarity for South Asian diaspora consumers, who often look for the kachi ghani name on mustard oil.
- Cosmetic and massage uses, where unrefined oil is preferred.
The trade-offs
Cold-pressed oil is not refined, so whatever is in the seed stays in the oil. Free fatty acid levels are usually higher than in refined oil. Shelf life is shorter, and the oil is more sensitive to light, heat and air.
Seed quality therefore matters more. Mouldy or damaged seed gives acidic, off-flavoured oil and a higher risk of aflatoxin, especially in groundnut. Pesticide residues in the seed also carry into the oil.
Mustard oil has its own issues. It is naturally pungent from allyl isothiocyanate. It is also the oil most associated with argemone oil adulteration in India, so testing for argemone is common, as covered in how to check edible oil for adulteration.
Your market may treat the name differently
Kachi ghani has meaning in India but none in most import regulations. Your label must follow your own country's rules. Mustard oil, for example, has faced restrictions on food use in some markets because of its erucic acid content. Check the current position with your national food authority before you plan a retail launch. Label points are covered in labelling rules for imported edible oils.
How we help
We find mills that genuinely press in a ghani, film the process on site, and test acid value, peroxide value and contaminants at an NABL-accredited lab. That gives you evidence behind your label claim. Ask for a free sourcing review.