Five Recipes That Need Mustard Oil — and Will Not Accept a Substitute
From shorshe ilish to a five-minute aloo poshto. The dishes where only kachi ghani will do, and the science behind why.
Most oils are interchangeable. Sunflower, rice bran, groundnut, refined olive — swap one for the other and your dish will land in the same neighbourhood. But there is a small list of recipes where only kachi ghani mustard oil will do. Substitute, and you are cooking a different dish.
1. Shorshe Ilish
Bengal's monsoon ritual. The hilsa is anointed with mustard paste, turmeric, salt, and four tablespoons of raw mustard oil. The fish goes onto a banana leaf, into a steaming kadhai. No tempering, no garlic, no onion. Just oil, paste, fish. Try this with sunflower oil. Then never try it again.
2. Aloo Poshto
Five ingredients, eight minutes. Mustard oil heated until just smoking, slit green chillies thrown in, boiled potatoes added, a wet paste of poppy seeds folded through. The mustard oil holds the dish together — without it, the poppy paste turns chalky.
3. Sarson da Saag
See our long-form on this one. The oil isn't a vehicle. It is an ingredient.
4. Achar (the real kind)
Mango, lemon, mixed vegetable — pickling tradition across North India runs on mustard oil. The pungency preserves. The colour saturates the pickle. Sit a jar of aam ka achar in the sun for a week with mustard oil and you have something that lasts a year.
5. Macher Jhol
The Bengali fish curry. Tempering of nigella seeds in mustard oil, light gravy of potato, tomato, turmeric. The dish takes twenty minutes. It tastes like an afternoon.