Ingredients

This recipe makes 4 servings. Change the number and every amount below updates with it. Substitutes for hard-to-find items are in the sidebar.

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Method

Follow these 6 steps. Each one explains not just what to do, but why it matters.

1. 01

   Soak the Green Gram

   Give the whole green gram a good rinse, then soak it in plenty of water for at least 4 hours, or overnight if you can, and drain.

   I know it feels like waiting around, but this soaking step is what decides whether the whole thing cooks properly. Whole green gram still has its skin on, and that skin is why it's slow to cook and prone to staying hard in the middle if you rush it. As the beans soak you'll see them swell and turn a brighter green, which means they're taking on water so they can cook evenly instead of staying chalky in the middle while the outsides overcook. A good soak also cuts the simmering time and makes the beans easier on your stomach.

   

   Tip: Short on time? You can pour just-boiled water over the rinsed beans, cover them, and leave them for an hour. It's not as good as a full soak, but it softens the skins enough to get you started.

2. 02

   Boil to Just Tender

   Put the drained beans in a pot with the water, turmeric, pandan and curry leaves. Bring it to a boil, then turn the heat down and simmer gently for 25-30 minutes, until the beans are just tender but still hold their shape. Add a splash of hot water if the pot starts to run dry.

   This step sets the texture for the whole dish, so don't even think about cooking the beans to a mush. You want the point where a bean squashes easily between two fingers but still looks round and whole, soft with a gentle bite, not collapsed. The turmeric blooms into the water and tints the beans warm gold, and the pandan and curry leaves perfume them gently from the inside. Keep the pot at a lazy simmer, never a rolling boil, because boiling knocks the beans around and bursts their skins before the centres are actually cooked.

   

   Tip: Soaked beans cook faster than unsoaked ones, so start checking around 25 minutes. The exact time depends on how old your beans are, and older dried beans always take longer.

3. 03

   Add Coconut Milk and Spices

   Now stir in the thin coconut milk, mild curry powder and slit green chillies. Simmer gently for another 8-10 minutes so the beans can soak up the gravy and finish softening.

   Here's the thing: this is the moment those plain boiled beans turn into a proper curry. The thin coconut milk loosens the pot and gives the beans something rich to soak up as they finish, while the mild curry powder and green chilli add a gentle savoury warmth without burying the earthy flavour of the beans. Keep the curry powder unroasted and light, because a dark roasted blend will bully the quiet taste of green gram. You'll see the gravy thicken a little as the beans release starch, and that's exactly what gives the curry its body.

   

   Tip: Stick to a mild, unroasted curry powder. Green gram is earthy and gentle, and a heavy roasted blend buries that flavour instead of supporting it.

4. 04

   Finish with Thick Coconut Milk

   Pour in the thick coconut milk and salt, then simmer very gently for 3-4 minutes until the gravy goes creamy and glossy. Do not let it boil hard.

   This last pour is what rounds the whole curry out, so don't rush it. Thick coconut milk is delicate. If it hits a rolling boil it splits into oily flecks and a grainy curdle, so drop the heat right down and let it barely tremble while it warms through and thickens around the beans. As it simmers you'll see the gravy turn pale gold and glossy enough to coat the back of a spoon, and the whole pot will taste sweeter and more mellow than it did a minute before. Salt goes in now too, because coconut milk softens the seasoning and the beans drink up more salt than you'd expect.

   

   Tip: Add the thick coconut milk off the high heat, and stir for the first few seconds as it goes in. That quick stir is the surest way to keep the gravy smooth and stop it splitting.

5. 05

   Make the Temper

   Heat the coconut oil in a small pan. Add the mustard seeds and, when they pop, add the onion, garlic, curry leaves and broken dried chilli. Fry until the onion is golden and everything smells properly fragrant.

   This is the step that makes the kitchen smell like a Sri Lankan home, and it is the move that turns a pot of coconut beans into a proper Sri Lankan curry. Wait for the oil to be properly hot, because the mustard seeds need real heat to crackle and pop, and that popping is your cue the temper is alive. The instant the curry leaves hit the oil they spit and perfume the air, the garlic turns nutty and golden, and the onion softens then caramelises at the edges. The dried chilli warms the oil with a gentle, smoky heat. Keep everything moving so nothing burns; you want golden and fragrant, never dark and bitter.

   

   Tip: Have a lid or splatter screen ready. Mustard seeds jump out of the pan as they pop, and the temper moves fast once the oil is hot.

6. 06

   Combine and Rest

   Pour the sizzling temper over the green gram curry and fold it through. Taste for salt and adjust if needed, then let it sit for a couple of minutes before serving.

   Tipping the hot, aromatic oil over the curry is the best moment in the whole recipe, and it matters that the temper is still sizzling when it lands. That heat drives the toasted aromas of mustard, curry leaf and caramelised onion down into the gravy and the beans rather than leaving them sitting on top. Scrape every last drop of flavoured oil out of the pan, then fold gently so the temper marbles through without crushing the beans. A short rest lets the flavours settle and the gravy thicken to that perfect spoonable point. Taste for salt at the very end, because the beans and coconut milk both soak it up.

   

   Tip: If the curry tightens up too much while it rests, loosen it with a splash of hot water or coconut milk. It should be spoonable and a little saucy, not stiff and dry.

Serving Ideas

• As the protein-rich centre of a rice-and-curry plate, with pol sambol on the side.
• Spooned over string hoppers or pittu for a filling, wholesome breakfast.
• With warm bread or roti to scoop up the coconut gravy.
• Alongside a sharp lunu miris and red rice for an everyday plant-based meal.
• Next to the silkier dhal curry, so you get both a creamy and a textured pulse on one plate.

Building a whole plate around it? Start from our vegetarian rice and curry menu, which sets out what to cook alongside it and in what order.

Storage and Make-Ahead

Keeps for 4 days in the fridge in a sealed container, and it thickens as it sits because the beans keep drinking up the gravy. Loosen it with a splash of water or coconut milk when you reheat, and warm it gently so the coconut milk doesn't split. It freezes well for up to 2 months too.

Two Ways to Cook It

Lighter and Healthier Version

Green gram curry is already a plant-based dish built on high-protein, high-fibre beans. Most of the richness sits in the coconut milk and the tempering oil, so a few small swaps keep the creamy, comforting character while trimming the fat. That suits anyone watching calories or cooking for everyday rather than a feast.

Frequently Asked Questions

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