processing
What Is Monsooned Malabar Coffee?
Monsooned Malabar is the only coffee in the world made by leaving green beans out in the weather on purpose. It began as an accident of sailing-ship cargo holds and is now a specification.
Every other processing decision in coffee is about drying the bean down and keeping it stable. Monsooning does the opposite: it takes already-cured green coffee and deliberately puts moisture back in, over weeks, until the bean has physically changed.
India is the only origin that does it.
Where it came from
Before the Suez Canal, coffee from the Malabar coast sailed to Europe in the holds of wooden ships, a voyage of several months through humid tropical air. It arrived swollen, pale gold instead of blue-green, and tasting nothing like it did at origin — low in acidity, heavy in body, faintly musty in a way European buyers came to expect and then to want.
Faster steel ships and the canal removed the accident. The taste had a market by then, so the accident was reconstructed on land as a process.
How it is done
Monsooning happens after curing, on the south-west coast during the monsoon, roughly June to September.
- Selection. Only certain lots are suitable — typically well-bodied cherry-processed arabica and robusta. Delicate washed lots are not used, because there is nothing delicate left at the end.
- Spreading. The green coffee is spread in layers on the floors of open-sided warehouses, built so monsoon air moves through them continuously.
- Raking. The beds are raked at intervals so every bean is exposed evenly, and so the mass does not heat or mould.
- Bagging and re-bagging. The coffee is loosely bagged, restacked and re-bagged repeatedly through the season, letting the bags breathe and preventing compaction.
- Grading again. After several weeks the swollen beans are re-graded and sorted, since size and density have both changed.
The whole cycle runs to a number of weeks rather than days, and it is weather-dependent: a weak monsoon produces a weak monsooning.
What changes
The bean itself:
| Before | After | |
|---|---|---|
| Colour | Blue-green | Pale gold to buff |
| Size | Original screen | Noticeably swollen |
| Density | Higher | Lower |
| Moisture | ~10–11% | Substantially higher during the process |
| Screen grade | As cured | Re-graded after |
The cup: acidity drops sharply, body rises, and the coffee moves towards earthy, woody, chocolate and spice. The bright fruit notes a washed coffee might have carried are gone — that is not a failure of the process, it is the process.
Roasting it
Monsooned coffee behaves differently in the drum and it is worth knowing before the first batch:
- It is less dense than unmonsooned coffee of the same screen, so it takes heat more readily and can run away in first crack.
- It is already pale, so colour is a poor guide early in the roast.
- It develops quickly, and most roasters find they need to ease off through the middle of the curve rather than push.
Approach it as you would a low-density, high-altitude-equivalent coffee: gentler charge, watch the rate of rise, trust time and temperature over colour.
Who it is for
Monsooned Malabar is not a replacement for a bright single origin and no one should sell it as one. It earns its place in three situations:
- Espresso blends that need body and a long, heavy finish without sharpness.
- Milk drinks, where low acidity and chocolate weight survive dilution.
- Buyers who want something genuinely unusual with a real story that happens to be true.
If your customers want florals and citrus, this is the wrong coffee. If they want something that tastes like it was made somewhere specific, it is very much the right one.
Grades and buying
The best-known grade is Monsooned Malabar AA for arabica. Monsooned robusta also exists and is far less written about — we have a separate note on it — and is worth a look if you blend for espresso.
When buying, ask:
- Which crop the coffee was monsooned from, and in which monsoon.
- How many weeks it was exposed.
- The post-monsooning screen grade, not the pre-monsooning one.
- Moisture at shipment, since the whole point of the process is that moisture went up and then had to come back down to a shippable figure.
That last question is the one that separates a controlled monsooning from a careless one.
From this estate
Hoysala's monsooned lots come off the same Chikmagalur blocks as the washed and natural coffee, and are monsooned on the coast during the south-west monsoon.
Hoysala’s monsooned lots are Bodhi (arabica) and Nandi (robusta), monsooned in the estate’s own dedicated unit rather than contracted out to a third-party warehouse. Grade, screen, moisture and bag counts by market are on the offer list.
The origin guide sets out where the crop sits in the wider Indian picture.