Cardamom Buying Guide: Size, Colour & Oil Content
How to evaluate cardamom quality by size grade, colour, and volatile oil content — and how to avoid common fraud in the wholesale market.
Size Grades: 8mm, 7mm, 6mm
Cardamom is graded primarily by pod size, measured in millimetres. 8mm bold is the largest commercially available grade — deep green, visually impressive, and commands the highest price. It is preferred for premium retail packing, gifting, and export.
7mm is the workhorse grade. It accounts for the majority of wholesale trade in India. Good aroma, decent size, and significantly more affordable than 8mm. Most restaurants, chai manufacturers, and retail brands use 7mm.
6mm and below is the economy tier. Smaller pods, but the seeds inside carry the same essential oils. This grade makes sense for grinding, masala manufacturing, and any application where the pod is not seen by the end consumer. Buying 8mm for grinding is simply wasting money.
Why Green Colour Matters — and How It Is Faked
Fresh, properly dried cardamom has a natural green colour that indicates careful post-harvest processing. Pods that are over-dried, old, or poorly stored turn pale yellow or brown. Colour is a proxy for freshness and volatile oil retention.
The problem: artificial colouring is widespread. Lower-grade or old stock is dyed green to fetch higher prices. The test is simple — rub a pod with a damp white cloth. If green colour transfers to the cloth, the cardamom has been artificially coloured. Naturally green pods will not bleed colour.
Another indicator: uniformly bright green pods with no colour variation at all are suspicious. Natural batches always have slight variation in shade. If every pod in a lot looks identically vivid, question it.
Volatile Oil Content
The real measure of cardamom quality is volatile oil content — this is what gives cardamom its aroma and flavour. Premium cardamom has 4-6% volatile oil. Below 3% and the cardamom will taste flat, no matter how green and large the pods look.
Spent cardamom is the biggest fraud in the trade. These are pods that have already had their essential oils extracted (steam distilled) for the perfume and pharmaceutical industry. The spent pods look almost identical to fresh ones but have virtually no aroma. They are mixed into fresh lots to increase weight and volume.
How to detect spent cardamom: crush a pod and smell the seeds. Fresh cardamom has an intense, sweet, camphoraceous aroma that hits immediately. Spent cardamom smells faint, stale, or like nothing at all. If buying in bulk, always crush and smell pods from multiple points in the lot — mixing fresh and spent is a common tactic.
For serious buyers purchasing at scale, laboratory testing for volatile oil percentage is worth the investment. A few thousand rupees in testing can prevent lakhs in losses from adulterated stock.
Pricing and Auction Dynamics
Cardamom is one of the most volatile commodities in India. Prices are set by daily auctions in Bodinayakanur (Tamil Nadu) and Vandanmedu (Kerala). A single poor monsoon can double prices within weeks. Conversely, a bumper crop can crash rates.
This volatility means timing matters more for cardamom than almost any other spice. Experienced buyers watch auction trends and buy when prices dip rather than chasing stock during peak demand (Diwali, wedding season).
At Star Almond, we maintain relationships with auction agents and plantation-level suppliers in Kerala and Karnataka. This lets us offer competitive rates even during tight supply periods. For regular buyers, we can set up forward contracts to lock in pricing and protect against spikes.
One practical tip: if you need cardamom for grinding or masala production, consider buying 6mm grade during price spikes. The oil content is comparable to 7mm, and the price difference can be 30-40%. Your end customer will not taste the difference in a blended masala.