Dal tadka is boiled lentils with a spoonful of spiced hot fat poured over them at the end. That’s it. The whole dish turns on the second half of that sentence, and it’s the half most recipes written for a Western audience quietly get wrong by stirring the spices into the pot at the start.
I cook this two or three times a week. It’s the thing I make when I have no plan and no energy, and after twenty-odd years of making it I still taste the difference on the days I rush the tadka.
What separates this from every other lentil dish on the site
People land on dal tadka expecting a lentil curry, and it isn’t one. There’s no long-simmered masala base, no coconut, no ginger-garlic paste fried down for fifteen minutes. The dal is cooked plainly in salted water with turmeric, and all the flavour arrives in the last thirty seconds.
Compare it to the coconut curry lentil soup, where the spices are built into the liquid and everything simmers together, or chana masala, which needs a real onion-tomato base cooked until it darkens. Dal tadka is the everyday, thirty-five-minute version that Indian households actually eat on a Wednesday. Less work, and honestly more comforting.
Which dal, and how long each one takes
Toor dal (also sold as arhar dal, or split pigeon peas) is the standard for tadka dal in most of North and West India. It holds a little texture, tastes faintly sweet, and doesn’t collapse into paste. If you buy one bag, buy that one.
| Dal | Soaked 30 min, then | Texture |
|---|---|---|
| Toor / arhar | Cooker: 4–5 whistles, ~12 min at pressure. Pot: 45–55 min | Holds shape, slightly sweet |
| Masoor (red split) | Cooker: 2–3 whistles. Pot: 20–25 min | Falls apart completely, softest |
| Moong (yellow split) | Cooker: 3 whistles. Pot: 25–30 min | Light, clean, easiest to digest |
Masoor is what I use when someone’s arrived unannounced, because it’s done in twenty minutes and forgives everything. Moong is what I make when someone’s been ill — it sits lightly. Mixing toor and moong half-and-half gives you body plus speed, and that’s what’s in my pot most weeks.
Soaking isn’t essential, but thirty minutes cuts the cook time by roughly a third and stops the toor from foaming as hard. Rinse in three changes of water first; the water should run close to clear.
Ingredients
- 200g toor (arhar) dal, rinsed and soaked 30 minutes
- 750ml water, plus more to loosen
- ½ tsp turmeric
- 1 tsp salt, plus more to taste
- 1 medium tomato, chopped
- 2 tbsp ghee (or oil, for a vegan version)
- 1 tsp cumin seeds
- ½ tsp black mustard seeds
- 2 dried red chillies, broken in half
- 4 garlic cloves, sliced thin
- 1 small onion, finely chopped (optional)
- ¼ tsp asafoetida (hing)
- ½ tsp Kashmiri chilli powder
- A handful of coriander leaves
- Juice of half a lemon
Instructions
- Drain the soaked dal. Put it in the pressure cooker with 750ml water, the turmeric and half a teaspoon of salt. A teaspoon of oil in the water keeps the foam down.
- Cook on high until the first whistle, then lower the heat and give it 4 more whistles, about 12 minutes total at pressure. Turn off the heat and let the pressure drop on its own. Don’t lift the weight, don’t run the cooker under the tap, and never force the lid — hot dal under pressure will spray, and it burns. Waiting takes 8–10 minutes.
- Open the cooker, add the chopped tomato and the rest of the salt, and simmer uncovered for 5–6 minutes until the tomato has gone soft and lost its edges. Whisk the dal briskly with a balloon whisk or the back of a ladle to break it down. Add hot water a splash at a time until it’s pourable.
- Now the tadka. Heat the ghee in a small steel pan over medium-high until it shimmers and thins out.
- Cumin and mustard seeds go in first. They should crackle within three or four seconds — if they sit there silently, the fat is too cool, and if they blacken instantly it’s too hot. Wait until the mustard has stopped popping.
- Add the broken dried chillies. Five seconds, until they darken a shade.
- Add the garlic (and onion, if using). Cook 40–60 seconds for garlic alone, until the edges are pale gold. Not brown. Garlic goes from gold to bitter in about ten seconds.
- Take the pan off the heat completely. Now stir in the asafoetida and the chilli powder. They cook in the residual heat in three or four seconds and burn if you leave the pan on the flame.
- Pour the whole panful over the dal, fat and all. It will hiss. Don’t stir it in straight away — put the lid on for two minutes, then stir.
- Finish with lemon juice and coriander. Taste for salt one last time, because the tadka changes it.
Why the tadka goes on last and not in first
Whole spices in hot fat release oil-soluble compounds that water can’t pull out. Cumin simmered in dal for twenty minutes gives you a dull, dusty background note. The same cumin in ghee at around 180°C for four seconds gives you the smell that fills the kitchen.
Pour it over at the end and those compounds are still sitting on the surface of the dal, in the fat, undiluted. That’s why the first spoonful of a fresh dal tadka tastes stronger than the fifth, and why the dish is named after the tadka rather than the lentil.
A steel tadka pan (a small one with a long handle) is worth the couple of pounds it costs. A frying pan works but has too much surface area — two tablespoons of ghee spread thin across a big pan will scorch the seeds before they bloom.
Water, and how it should actually look
The number I use is roughly one part dal to three and a half parts water by volume, so 200g dal to 750ml. That gives a dal that pours off a ladle in a stream and coats the back of a spoon without sliding straight off.
Too thick and it’s a paste that sits on rice in a lump. Too thin and it runs off the plate. Test it by dragging a finger across a coated spoon: the line should hold for a second, then slowly close.
Add water hot, never cold, and add it before the tadka rather than after. Cold water dulls a hot dal and you’ll be chasing the temperature back up.
Cooker or open pot
The cooker wins on time; the pot wins on control. In an open pot, soaked toor takes 45–55 minutes at a low simmer with the lid ajar, and you’ll need to top up with hot water twice and skim the grey foam in the first ten minutes.
About whistle counts: they’re the standard instruction in Indian kitchens and they’re also imprecise, because a whistle depends on your cooker’s weight and your flame. Four whistles on a low flame can be twice the cooking time of four on a high one. Treat the counts as a starting point and judge by the dal — a grain should crush to nothing between finger and thumb with no grit in the middle. If it isn’t there, close the cooker and give it two more whistles.
Same principle as cooking dried beans from scratch: the timing chart is a guide, the texture is the answer.
Salt, tomato, and the order things go in
Salt half at the start. The old advice that salt stops pulses softening applies to whole beans with skins, not much to split, skinned dal — half a teaspoon in the cooking water seasons the lentil from the inside instead of coating it at the end. The rest goes in after the tomato.
Tomato goes in after the dal is cooked, not before. Acid does slow softening, and a tomato pressure-cooked with the lentils leaves you with dal that’s still chalky at fifteen minutes. Five minutes of open simmering afterwards is plenty for it to break down.
If you like a sharper dal, skip the tomato and use amchur (dried mango powder) or a bigger squeeze of lemon at the end. Lemon after the heat is off, always — boiled lemon juice turns flat and slightly bitter.
The second tadka at the table
Some households do this and some think it’s showing off. A second, smaller tadka — usually just ghee, a pinch of chilli powder and a little garlic — is made while everyone is sitting down and poured over the serving bowl in front of them.
The reason isn’t theatre, though it looks like it. The first tadka’s aromatics fade within about fifteen minutes of sitting in hot dal. If your dal has been in a pot waiting for people to arrive, a fresh spoonful of ghee and chilli at the table puts back exactly what went missing.
I do it when there are guests. On a normal night, one tadka, straight from the pan into the pot.
Dal the next day
It thickens. Overnight in the fridge, a pourable dal sets to something closer to hummus, because the starch keeps absorbing. This is normal and not a sign you did anything wrong.
Reheat in a pan with 100–150ml of hot water per two portions, stirring until it loosens back to a stream off the spoon. Microwaving without added water gives you a hot brick with a skin on it.
Three or four days in the fridge. It freezes well for three months, and I freeze it deliberately thick and loosen it on the way back. What I’d say honestly: day-two dal tastes flatter, and a quick fresh tadka over the reheated bowl fixes it in ninety seconds. Leftover dal thinned with extra water also makes a decent quick soup alongside a masala omelette for a lazy lunch.
Answers to the things I get emailed about
Can I make it without a pressure cooker or ghee? Yes to both. Open pot per the timings above; sunflower or groundnut oil for the tadka. Coconut oil works but pushes the dish somewhere else entirely.
My dal tastes flat even though I followed everything. Nine times out of ten it’s salt, and the tenth is acid. Add a quarter teaspoon of salt, stir, taste, then a squeeze of lemon. Dal absorbs seasoning as it sits, so the amount that was right in the pot can read as under-seasoned twenty minutes later.
What’s asafoetida actually doing? It’s a resin, and on its own it smells unpleasant. In hot fat it turns into a savoury, faintly oniony depth that’s hard to name once it’s in there. Skip it and the dal isn’t wrong, just quieter. Note that most asafoetida sold in the UK is cut with wheat flour, which matters if you’re avoiding gluten.
Rice or roti? Rice, and specifically plain steamed rice rather than anything fried — the point is a neutral base under the dal. If you want to make a full plate of it, vegetable fried rice is the wrong partner here; it fights the tadka. Save it for another night.