How a Kerala pickle is actually made, start to finish

A pickle is a preservation method before it is a condiment, and the preservation is done by salt and oil, not vinegar. That distinction explains almost everything about how a traditional achar tastes compared to a factory one.

The mango is cut and salted first, and then left alone. Over several days the salt pulls the water out of the fruit and forms its own brine. Skip this and you get a pickle that goes cloudy in a month, which is why shortcuts reach for synthetic vinegar instead.

Only once the fruit has given up its water does the masala go in — chilli, fenugreek, mustard, asafoetida — followed by gingelly oil, which has to sit a full finger above the solids. The oil is the seal. Anything poking above it will spoil.

Then you wait again. Six weeks is when the raw chilli edge softens and the flavours stop tasting like separate ingredients. There is no way to hurry this part, and every pickle that tastes sharp and disjointed is one that was sold too early.