Khar with Joha — when the rice is the loudest ingredient

Most Indian rice is a vehicle. It carries flavour from one element on the plate to another, soaking up gravy on the way. Joha rice is not a vehicle. It is the destination.

Khar is the dish that exists, more or less, to let it be that.

Khar is the Assamese name for an alkaline filtrate traditionally made by burning the skin of a sun-dried banana, collecting the ash, soaking it in water, and straining the liquid clear. The result is a pale, faintly mineral liquid — the kharoni — that you use as you would a seasoning, a few tablespoons at a time, to balance richer ingredients with a clean astringent finish.

What is on the plate, in a classic Assamese midday meal of bhaat aru khar, is staggeringly simple: a small mound of steamed rice, a separate bowl of khar cooked with raw papaya or a leafy green, a side of aloo pitika (mashed potato with mustard oil and green chilli), and a wedge of lemon. There is no curry. There is no gravy. There is no spice mix doing the heavy lifting.

The Joha is the lifting.

Khar with Joha · Serves 2

For the rice — 150 g GI Keteki Joha rice, rinsed three times in cool water · 280 ml water · A pinch of salt · 1 tsp mustard oil (optional, for the lift).

For the khar — 200 g raw papaya, peeled and cut into 2 cm cubes (or one bunch of jolpan xaak, colocasia leaves, sliced thin) · 2 tbsp traditional khar (or, as a working substitute, ½ tsp food-grade baking soda dissolved in 60 ml water) · 1 small dried red chilli, broken · ½ tsp salt · ¾ tsp GI Karbi Anglong Ginger Powder, dissolved in 2 tbsp water · 1 tsp mustard oil · Fresh coriander to finish.

To plate — A wedge of lemon · A small mound of mashed potato seasoned with raw mustard oil and a slit green chilli (optional but traditional).

The rice. Soak the Joha for twenty minutes after the third rinse. Drain, place in a heavy pot with the measured water and the pinch of salt, bring to a single boil, then lower to the smallest flame and cover tight. Twelve minutes. Off the heat. Don't lift the lid. Let it sit, covered, for another ten. When you uncover it, drag a fork through the surface — not stirring, just separating — and add the mustard oil if you are using it. The grain should be soft, the perfume should reach the doorway, and the rice should hold its shape even as the kitchen smells of something the supermarket version does not smell of.

The khar. Heat the mustard oil in a small kadhai until it just smokes. Pull off the heat for ten seconds to settle the bite, then return to a low flame and add the broken chilli. Three seconds. Add the papaya cubes. Toss for a minute. Add the khar liquid and the salt. Cover, cook on low for twelve to fifteen minutes until the papaya has gone translucent — it will look a little glassy at the edges. Stir in the dissolved ginger powder. Cook one more minute. The dish should be brothy, not thick — the khar is not a gravy.

To plate. A small mound of Joha. A separate bowl of khar with its broth. A spoon of mashed potato on the side. A wedge of lemon.

Eat the rice first, with a few drops of khar broth. Notice the rice. Then build the meal.

A note on the rice. Joha is a short-grain aromatic. Do not treat it like Basmati. It will not lengthen. It is meant to be small, slightly sticky, fragrant in the way that a closed pot suddenly fills a room. The supermarket “Joha-style” rice you may have encountered is almost certainly hybridised and will smell of nothing in particular. Real Keteki Joha — protected by GI since 2018 — does not need turmeric or whole spices to flavour it. The four hundred years it took to be bred into existence are the flavour.

A note on khar. If you can find traditional banana-skin khar from an Assamese household, use it. The flavour is rounder, the alkalinity gentler. The baking-soda substitute works for a weeknight, and is what most modern Guwahati kitchens use when no one's grandmother is visiting. Either is fine. The point of khar, as the old saying in Jorhat goes, is to make space for the rice to be heard.

— Kopahi Kitchens. The kitchen at Kopahi cooks slowly. We publish only when the recipe earns its place.