Aloo Posto Recipe: Bengali Potato & Poppy Seed Curry

Aloo posto is a classic Bengali dish in which soft potato cubes are cooked in a thick, creamy paste of ground white poppy seeds. It uses no onion, no garlic and no tomato — all the richness comes from the posta dana itself, and the whole thing is ready in about 25 minutes.

Also known as: posto in Bengali, posta dana or khus khus in Hindi, and white poppy seeds in English. If a recipe asks for khus khus paste, it means exactly the same ingredient.

What makes aloo posto different from a regular aloo sabzi?

A normal aloo sabzi leans on onion, tomato and a long list of masalas. Aloo posto does the opposite. The poppy seeds are soaked and ground into a pale, nutty paste that clings to every potato cube and thickens the dish on its own. The flavour is gentle and slightly sweet, with heat coming only from slit green chillies. It is a summer favourite in Bengali homes, eaten simply with hot rice and a spoon of mustard oil on top.

Because there are so few ingredients, quality matters more than usual. Good posta dana should be ivory-white, dry and free-flowing — grey or clumped seeds are old and will taste flat.

What you need

• 4 medium potatoes, peeled and cut into 1-inch cubes
• 4 tablespoons white poppy seeds (posta dana)
• 3 to 4 green chillies, 2 for the paste and the rest slit
• 3 tablespoons mustard oil
• 1/4 teaspoon kalonji (nigella seeds) for tempering, optional
• 1/4 teaspoon turmeric powder, optional — many families skip it to keep the dish pale
• Salt to taste and about 1/2 cup warm water

Some households temper with black mustard seeds instead of kalonji. Both work; pick one, not both, so the tempering does not overpower the posto.

How do you make aloo posto step by step?

1. Soak the seeds. Cover the poppy seeds with hot water and leave them for 20 to 30 minutes. This is the step most people skip, and it is the reason their paste turns out gritty.
2. Grind. Drain most of the water, add 2 green chillies and a pinch of salt, and grind to a smooth, thick paste with a splash of fresh water. Set it aside.
3. Fry the potatoes. Heat mustard oil until it just starts to smoke, then lower the flame. Add the kalonji and the slit chillies, wait a few seconds, then add the potato cubes with a little salt. Fry on medium heat for 6 to 8 minutes until the edges turn light golden.
4. Add the paste. Stir in the poppy seed paste and cook for 2 to 3 minutes, keeping the flame low so it does not catch at the bottom.
5. Simmer. Pour in the warm water, cover, and cook for 8 to 10 minutes until the potatoes are soft and the gravy has thickened into a coating rather than a soup.
6. Finish. Turn off the heat, check the salt, and drizzle half a teaspoon of raw mustard oil over the top. Rest it for five minutes before serving.

How do you grind posta dana into a smooth paste?

Poppy seeds are tiny and hard, so a dry grinder alone rarely does the job. Three things fix it: soak in hot water first, grind in a small jar so the blades actually catch the seeds, and add water a teaspoon at a time instead of all at once. A traditional sil-batta or a wet grinder gives the smoothest result. If your mixer struggles, grind the soaked seeds along with a few cubes of ice — the cold keeps the paste from turning bitter.

Common mistakes worth avoiding

• Skipping the soak. Dry-grinding leaves a sandy texture that no amount of simmering will smooth out.
• Overheating the paste. Poppy seed paste turns bitter on high heat. Keep the flame low once it goes in.
• Adding too much water. Aloo posto is meant to coat the potatoes, not swim in gravy.
• Using stale seeds. Poppy seeds are oil-rich and go off quickly. Store them in an airtight jar away from light and buy in small quantities.

FAQ

Can I make aloo posto without mustard oil?

You can use any neutral oil, but the dish will taste noticeably milder. Mustard oil gives aloo posto its characteristic sharp finish, so if you have it, use it — even a small drizzle at the end helps.

Is posta dana the same as khus khus?

Yes. Posta dana, khus khus and white poppy seeds all refer to the same ingredient. Note that this is different from khus (vetiver root) used in sharbat, despite the similar name.

How long does aloo posto keep?

It is best eaten fresh on the day it is made. Refrigerated in a closed container it keeps for about a day, though the paste tends to dry out — add a splash of warm water while reheating on a low flame.

ODM spices are handpicked and packed clean, with no artificial colours, no fillers and no preservatives. If you would like to try this recipe with seeds that grind smooth, our ODM Posta Dana is a good place to start.