Ingredients
- Aar fish pieces – 500g
- Mustard oil – 4–5 tbsp
- Turmeric powder – 1 tsp
- Red chilli powder – ½–1 tsp (optional)
- Green chillies – 4–6 (slit + whole)
- Kalonji (kalo jeere) – ½ tsp
- Mustard paste – 3 tbsp (Black + yellow mustard, a pinch of salt, and 1 green chilli—freshly ground)
- Salt – to taste
- Warm water – as needed
Method
1. Prepare the mustard paste (the heart of the dish)In Bengali homes, mustard is never rushed.
Grind black + yellow mustard, a pinch of salt, and one green chilli with a little water.
This avoids bitterness and gives that true sorsher jhaal flavour.2. Marinate the fish
Rub the aar pieces with turmeric and salt.
Let it rest for 10 minutes, just like every Bangali Maa instructs.3. Light-fry the fish
Heat mustard oil until it releases that sharp aroma—the smell of a proper Bengali kitchen.
Gently fry the fish 1 minute on each side.
Aar is delicate, so don’t brown it too much.4. Make the tempering (phoron)
In the same oil, add kalonji and 2–3 slit green chillies.
The moment they splutter, you’ll know the flavour has begun.5. Build the base
Add turmeric and a pinch of red chilli powder.
Splash a little water and cook the spices for 30–40 seconds so they don’t burn.
This keeps the jhal light — the classic Bengali way.6. Add the mustard paste
Reduce the heat completely.
Add the mustard paste and stir gently for just 30 seconds.
Too much frying makes the mustard bitter — a rule every Bengali follows.7. Form the gravy
Pour in warm water (around 1–1.5 cups).
Add salt and let it come to a soft boil.
The broth should be light, golden, and full of mustard aroma.8. Add the fish
Place the fish pieces carefully into the gravy.
Add the remaining whole green chillies.
Simmer on low heat for 6–8 minutes.Don’t stir too much — aar mach easily breaks, just like Bengali emotions.
9. Final touch
Switch off the flame and drizzle ½ tsp raw mustard oil on top.
This last drop is pure Bangaliana — aromatic, sharp, and beautiful!