Kannimanga achar

Baby mango pickle

In central Kerala, around Thrissur and Kottayam, families watch the mango trees in January and February and pick the tiniest fruit, no bigger than a thumb joint, before the stone hardens. These kannimanga are salted whole in a tall ceramic bharani, left until shrivelled in their own brine, then mixed with freshly ground raw mustard, Kashmiri chilli and hing and left to mature for three or four weeks. This older, oil-free style keeps the mangoes crunchy and the brine thick, red and sinus-clearing from the raw mustard. The flavour is salty, sour and fiercely pungent; one mango and a spoon of brine is enough for a whole bowl of kanji (rice gruel) or curd rice. The common mistake is using water that has not been boiled and cooled, which brings in microbes and turns the brine slimy. It is ready when the mangoes are wrinkled but crisp and the brine tastes mellow rather than raw. Salt is high, about 20 g per 100 g of mango, and the fruit is very acidic; kept fully submerged in a dry jar it lasts a year in a cool place. Abroad, any tiny, hard green mango with a soft stone works. Chef's tip: keep a short stalk on each mango; it stops brine seeping in and softening the fruit.