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Science-backed recipe

Achaari Chicken: All the Flavor of Achaar, in a Curry

Also called Achari Murgh · Achar Gosht-style Chicken · अचारी चिकन · اچاری چکن

Lunch & dinnerInstant Pot

Chicken simmered with the whole spices of mango pickle, fennel, mustard, fenugreek, nigella and cumin, in a tangy yogurt-tomato gravy. Punchy, sour and aromatic.

From the MedRise Food Science kitchenPublished
Active
45 min
Marinate
30 minutes
Total
1 hr 15 min
Serves
4
Jump to recipeStovetop methodRead the science
Achaari chicken in a pickle-spiced gravy with whole fennel, mustard and nigella seeds and green chilies

Why this recipe works

  • ✓
    Pickle flavor, no jar neededThe same whole spices that flavor mango achaar.
  • ✓
    Tangy and brightYogurt, tomato and a splash of lemon.
  • ✓
    Instant Pot easyUnder pressure for 8 minutes.
  • ✓
    The Indian baseBuilt on cumin, onion, ginger-garlic and tomato.

What is achaari chicken?

Achaari means “pickle-style.” Achaari chicken is cooked with the whole spices used to make Punjabi mango pickle, fennel, mustard seeds, fenugreek, nigella and cumin, plus a tangy yogurt and tomato gravy, so it tastes like aam ka achaar in curry form.

Achaar gosht, the mutton version, is a Pakistani and Hyderabadi favorite; chicken cooks faster and is just as good.

Small bowls of colorful ground Indian spices on a dark surface

Meet the ingredients

The main ingredients, with their English, Hindi and Urdu names.

Fennel seeds (saunf) measured by the teaspoon on a digital scale reading 2.0 g

Fennel seeds

सौंफسونف
saunf

Whole seeds.

Its job: Sweet, licorice-like aroma.
Pale yellow mustard seeds on a plate

Mustard seeds

राईرائی
rāī

Small yellow or black seeds.

Its job: Sharp, nutty pungency.
Fenugreek seeds (methi dana) measured by the teaspoon on a digital scale reading 3.7 g

Fenugreek seeds

मेथी दानाمیتھی دانہ
methī dānā

Small, hard, bitter seeds.

Its job: The pickle’s signature bitter-savory note.
Small black nigella seeds (kalonji) on a plate

Nigella seeds

कलौंजीکلونجی
kalaunjī

Tiny black seeds.

Its job: Onion-like, peppery aroma.
A small bowl of plain white yogurt with a spoon

Yogurt

दहीدہی
dahī

Plain whole-milk yogurt.

Its job: Tang and body.

Chicken

चिकनچکن
chikan

Bone-in thighs and drumsticks, skinless.

Its job: The protein.

Grow it yourself: Tomatoes, Green chilies, Cilantro (dhania), Methi (fenugreek), Garlic, Ginger

The lab notes

The science behind every step

Restaurant cooks do these things by habit. Here’s what each step is actually doing to the food, so you can cook by understanding instead of guesswork.

Lab note01

Whole spices in hot oil

Fry the whole spices in hot oil until they crackle, about 30 seconds.

Many spice aroma compounds dissolve in fat. A short, hot fry releases them into the oil, which then carries them through the whole curry. Fenugreek burns fast and turns acrid, so the spices only get seconds.

Lab note02

Why mustard seeds pop

Wait for the mustard seeds to pop before adding onions.

Heat turns the water inside the seed to steam until the seed bursts; popping is the sign the oil is hot enough to bloom everything else.

Lab note03

Yogurt off the boil

Whisk the yogurt and stir it in over low heat.

Yogurt proteins clump into grains when they hit a rolling boil with acid. Whisking it smooth and adding it gently keeps the gravy silky.

Lab note04

Acid at the end

Add the lemon juice after cooking.

Lemon added at the end keeps its fresh, sharp taste, the 'pickle' brightness, instead of cooking flat.

Technique, step by step

How to peel tomatoes, the food-science way

Score, blanch for 30–60 seconds, chill in ice water, and the skins slip right off. Peeled tomatoes cook into a smoother, silkier masala with no chewy flecks of skin.

  1. Scoring a shallow X on the bottom of a ripe tomato with a paring knife
    1. ScoreCut a shallow X through the skin on the bottom of each tomato.
  2. Scored tomatoes in boiling water with the skins starting to split at the X
    2. BlanchLower the tomatoes into rolling boiling water (a saucepan, or the Instant Pot on Sauté, More/High) for 30–60 seconds, just until the skin at the X starts to split.
  3. Blanched tomatoes going into an ice-water bath with their skins loosened
    3. ChillLift them straight into a bowl of ice water for about 1 minute.
  4. Slipping the loosened skin off a blanched tomato
    4. PeelStarting at the X, slip the skins off with your fingers. Cut out the core, then chop or blend.

Why peel at all?

Tomato skin is a tough, waxy layer that doesn’t break down with cooking; in a long-cooked masala it curls into chewy flecks. The skin is also where almost all of a tomato’s flavonoids sit, mainly naringenin chalcone and rutin, the kind of plant compounds that can taste faintly bitter or astringent. Texture is the bigger, better-proven reason, but peeled tomatoes give the smoothest, cleanest-tasting gravy.

Why the boiling water works

A short plunge heats only the outer layer. The heat weakens the pectin that glues the skin to the flesh, and steam forming underneath pushes the skin away, so it splits and curls back at the X while the flesh inside stays raw and firm.

Why the ice bath

Ice water stops the cooking at once, so the flesh doesn’t turn soft and mushy, and makes the tomatoes cool enough to peel right away. More than about a minute in the boiling water starts to cook the flesh.

Sources: National Center for Home Food Preservation: Put It Up! Boiling Water Canning · Muir et al., Nature Biotechnology (2001): flavonoids in tomato peel

How to make it, at a glance

  1. MarinateMix the chicken with the yogurt, salt and chili powder. Marinate 30 minutes (or overnight in the fridge).
  2. Temper the spicesSelect Sauté (More/High) and heat the oil. If using mustard oil, heat it until it just starts to smoke, then let it cool for a minute. Add the fennel, mustard, fenugreek, nigella and cumin seeds and fry until the mustard seeds pop, about 30 seconds.
  3. Brown the onionsAdd the onions and cook until golden, 7–8 minutes.
  4. Ginger-garlic, then spicesAdd the ginger-garlic paste for 1 minute, then the salt, chili powder and turmeric for 30 seconds.
  5. TomatoesAdd the tomato puree, green chilies and achaar masala and cook until thick and the oil separates, 5–6 minutes.
  6. Pressure cookAdd the chicken with its marinade and ¼ cup water, scraping the bottom well. Lock the lid, set the valve to Sealing and pressure cook on High for 8 minutes. Natural release for 10 minutes.
  7. FinishSelect Sauté and simmer uncovered for 3–5 minutes to thicken; check that the thickest piece reaches 165°F. Stir in the garam masala and lemon juice and top with cilantro.

Exact amounts and timings are in the recipe card below.

Questions, answered

What does achaari mean?

Pickle-style: the dish uses the same whole spices as Indian pickles.

Is achaari chicken very sour?

It’s tangy, not sour like pickle itself; add more lemon if you want it sharper.

About MedRise Food Science

Desi restaurant favorites, recreated at home and explained with food science: every recipe is tested in a home kitchen and comes with the why behind each step.

A brass kadai of achaari chicken
Recipe card

Achaari Chicken

Achaari chicken in the Instant Pot: chicken cooked with the whole pickling spices of mango achaar (fennel, mustard, fenugreek, nigella, cumin) in mustard oil, yogurt and tomato, for a tangy, punchy curry. With the food science of tempering whole spices.

Prep15 minMarinate30 minutesCook30 minTotal1 hr 15 minServes4 servings

Ingredients

Marinade

Achaari spices

Indian base

To finish

Instructions (Instant Pot)

  1. MarinateMix the chicken with the yogurt, salt and chili powder. Marinate 30 minutes (or overnight in the fridge).
  2. Temper the spicesSelect Sauté (More/High) and heat the oil. If using mustard oil, heat it until it just starts to smoke, then let it cool for a minute. Add the fennel, mustard, fenugreek, nigella and cumin seeds and fry until the mustard seeds pop, about 30 seconds.
  3. Brown the onionsAdd the onions and cook until golden, 7–8 minutes.
  4. Ginger-garlic, then spicesAdd the ginger-garlic paste for 1 minute, then the salt, chili powder and turmeric for 30 seconds.
  5. TomatoesAdd the tomato puree, green chilies and achaar masala and cook until thick and the oil separates, 5–6 minutes.
  6. Pressure cookAdd the chicken with its marinade and ¼ cup water, scraping the bottom well. Lock the lid, set the valve to Sealing and pressure cook on High for 8 minutes. Natural release for 10 minutes.
  7. FinishSelect Sauté and simmer uncovered for 3–5 minutes to thicken; check that the thickest piece reaches 165°F. Stir in the garam masala and lemon juice and top with cilantro.

Stovetop method

Use a heavy kadai or Dutch oven.

  1. SimmerFollow the same steps, then cover and simmer the chicken on low for 30–35 minutes, stirring now and then, until 165°F. Uncover to thicken.

Notes

Mustard oil
In the US, expressed mustard oil is labeled for external use; many cooks use it anyway, but neutral oil works fine.
Boneless
With boneless thighs, pressure cook 5 minutes.
Storage
Refrigerate up to 4 days or freeze up to 3 months.

Equipment

  • Instant Pot (6 qt)
  • Instant-read thermometer

Course: Main Course · Cuisine: Punjabi, Indian, Pakistani
MedRise Food Science

Sources & further reading