Lapsi Powder: The Sour Fruit Nepal Puts in Everything

Lapsi — लप्सी, and aamli to Newar speakers — is the fruit of Choerospondias axillaris, a tall deciduous tree of the Nepali mid-hills known in English as the Nepali hog plum. The fruit is about the size and shape of a large olive, green ripening to yellow, with a thin layer of pale, fibrous flesh wrapped around a big woody stone.

There is not much of that flesh, and raw it is fiercely, mouth-puckering sour — closer to an unripe tamarind than to a plum. That sourness is the entire point. Nepal has no shortage of lemons, but lapsi gives a rounder, fruitier, slightly resinous acidity that lemon cannot imitate, and unlike a lemon it can be dried and kept through the year.

The fruit is also unusually rich in vitamin C, which is part of why a tree that yields so little edible flesh per fruit has been worth planting and protecting for generations.

Almost nothing about lapsi is eaten fresh. The fruit is processed, and the forms it takes are a small industry in themselves. Boiled and mashed with mustard oil, fenugreek, turmeric and chilli it becomes lapsi ko achar. Dried, salted and rolled in sugar, chilli or fennel it becomes titaura — the chewy sweet-sour-salty sweets that Nepali children (and every adult who was once one) eat by the handful. Mada is its softer, sweeter cousin.

Lapsi powder — lapsi ko dhulo — is the plainest and most useful form: the dried pulp ground to a fine, tan-amber powder that is pure concentrated sourness with none of the sugar or oil. It is the version that behaves like an ingredient rather than a snack, and the one worth keeping in a Canadian pantry.

Treat it the way you would treat tamarind paste, amchur or a squeeze of lemon: as a finishing acid. Stir a small spoonful into a pot near the end of cooking, taste, and add more — it is concentrated, and it is much easier to add sourness than to take it away.

It belongs in gundruk ko jhol and sinki soup, in kwati, in aloo tama, in dal that has gone flat, in chatpate and fruit chaat, in sekuwa marinades, and in tomato achar where it deepens the tang without thinning the sauce the way lemon juice does. It is also the traditional sour agent stirred into karkalo and gava — taro leaves and stems — where the acid is not just for flavour but is what tames the calcium oxalate that otherwise leaves an itch in the throat.

The practical case for the powder is simple: it does not go off, it does not need a fridge, and it does not run out at the wrong moment. A jar on the shelf is a lemon you always have.

Lapsi is a mid-hill tree, and it is bound up with the Kathmandu Valley more tightly than with anywhere else — so much so that a settlement on the Valley’s northern rim is called Lapsiphedi, "the foot of the lapsi". The commercial fruit comes largely from the Valley and the hill districts around it, Kavre and Sindhupalchok above all, with Kaski and the Gandaki hills contributing too.

The trees are tall and long-lived, often standing on field edges and around homesteads rather than in orchards, and the fruit ripens and drops through autumn into early winter. Because the flesh is thin and intensely sour, the harvest goes almost entirely to processing — achar, titaura, candy and powder — which has made lapsi one of the few Nepali fruits with a genuine cottage industry built around it.

Lapsi is one of those ingredients that quietly defines what home tasted like. Nepali cooks abroad can approximate most things, but a gundruk soup soured with lemon instead of lapsi is recognisably not the same soup, and no substitute in a Canadian supermarket gets close to that fruity, faintly resinous tartness.

A 200g jar of lapsi powder lasts a long time, since it is used by the spoonful. Keep it sealed and dry, away from heat. Order authentic lapsi powder from our Nepali grocery and we will ship it anywhere in Canada.