Easy Sri Lankan Recipes: Coconut Red Lentil Curry

Sri Lankan parippu is a gently spiced red lentil curry, simmered until creamy and finished with coconut milk and a fragrant onion, mustard seed, and curry-leaf tempering. This straightforward version is a satisfying introduction to Sri Lankan home cooking; families and regions make parippu in different ways, adjusting the spice, thickness, and finishing ingredients.

Ingredients

1 cup (200 g) split red lentils, also called red masoor dal; pick through for debris and rinse until the water is less cloudy.
2 1/2 cups (600 ml) water for simmering, plus up to 1/4 cup (60 ml) hot water to loosen the curry if needed.
1 cup (240 ml) full-fat coconut milk, shaken or stirred before measuring. Light coconut milk works, but makes a thinner, less rich curry.
1/2 cup (75 g) finely chopped onion, red or yellow.
2 garlic cloves (6 g), finely chopped or crushed.
1 green chile (about 10 g), thinly sliced; remove the seeds for a milder curry.
1/2 teaspoon (1.5 g) ground turmeric.
1/2 teaspoon (1 g) ground black pepper.
1/2 teaspoon (1 g) Sri Lankan curry powder, preferably roasted curry powder; mild curry powder is a practical substitute, though it gives a less distinctly roasted aroma.
1/2 teaspoon fine salt (3 g), divided, or to taste.
1 small cinnamon stick (about 5 cm).
1 tablespoon (15 ml) neutral oil, such as canola or sunflower oil.
1/2 teaspoon mustard seeds (2 g).
1/2 teaspoon cumin seeds (1 g).
8 fresh or thawed curry leaves (about 2 g). If unavailable, omit them or use 1 small bay leaf in the lentil simmer; bay leaf is not a close flavor match and will make the curry less citrusy and distinctive.
1 dried red chile, optional, for a hotter tempering; or use a pinch of red pepper flakes.

Instructions

Prepare the ingredients. Rinse and drain the lentils, chop the onion and garlic, and slice the green chile. Measure the spices and coconut milk so they are ready to add. This preparation takes about 12 minutes, depending on your knife work.
Simmer the lentils. Put the lentils, water, turmeric, black pepper, curry powder, cinnamon stick, and 1/4 teaspoon of the salt in a medium saucepan. Bring to a boil over medium-high heat, stirring once or twice so lentils do not catch on the bottom. Reduce the heat to low and simmer partly covered for 18 minutes. Stir once halfway through. The lentils should be very soft and beginning to break down; if the pan looks dry before they soften, add a splash of hot water.
Make the tempering. While the lentils finish simmering, heat the oil in a small skillet over medium heat. Add the mustard seeds and cover loosely with a lid or splatter screen as they pop. When the popping slows, add the cumin seeds and cook for about 20 seconds. Stir in the onion and cook for 3 minutes, until softened and turning translucent. Add the garlic, green chile, curry leaves, and optional dried chile, then cook for about 1 minute, stirring so the garlic does not brown. The whole tempering takes about 5 minutes.
Finish the curry. Remove the cinnamon stick from the lentils. Stir in the coconut milk and the hot onion-and-spice mixture, scraping the skillet so the flavorful oil and seeds go into the saucepan. Simmer gently for 5 minutes, stirring often; avoid a hard boil, which can make the coconut milk look separated. Taste and add the remaining salt as needed. If the curry is thicker than you like, stir in hot water a tablespoon or two at a time. Serve hot.

Tips

Rinse, but do not soak. A quick rinse removes loose starch and dust, and split red lentils cook quickly without soaking. Soaking them would shorten the simmer and could leave them softer than intended, so start with the stated 18 minutes and check the texture.
Keep the tempering under control. Mustard seeds can jump as they pop, so use a lid or splatter screen. Add garlic after the onion has softened and keep stirring; browned garlic can taste bitter and overwhelm the gentle lentils.
Adjust heat at the chile. Green chiles vary considerably. Use half a chile, remove its seeds, or leave it out for a mild family-style curry. You can add a little red pepper at the table rather than making the whole saucepan hot.
Choose the coconut milk texture you want. Full-fat coconut milk gives a fuller, silkier sauce. If using a can, stir it well because the cream can separate and rise to the top. A curry that thickens as it stands is normal; loosen it with warm water when serving.

Serving Suggestions

Serve parippu warm with steamed white rice, preferably a fragrant long-grain rice, or with red rice for a heartier plate. It is also good with string hoppers, roti, or another flatbread that can scoop up the sauce. For a simple meal, pair it with a crisp cucumber salad or sliced tomato and onion dressed with lime. A spoonful of sambol adds a bright, spicy contrast, but the curry is flavorful enough to serve on its own.

For a larger Sri Lankan-inspired spread, offer the lentils with a vegetable curry, such as green beans or pumpkin, and a small dish of pickles or chutney. Keep the lentils in a serving bowl and put hotter condiments on the side so diners can adjust their own plates. If serving rice to a group, plan about 1/2 cup (90 g) uncooked rice per person as a generous accompaniment, adjusting for other dishes on the table.

Variations

Make it milder or hotter: Leave out the green chile and dried chile for a gentle version, or increase the green chile and add a pinch of red pepper flakes to the tempering. Add heat gradually; the flavor of a fresh chile is not always predictable from its size.

Use a different curry powder: Sri Lankan roasted curry powder contributes a deep, toasted flavor. If you cannot find it, use a mild curry powder from your pantry. The result will still be a useful weeknight lentil curry, but its aroma will be different. Avoid adding a large amount of a strong, salt-heavy seasoning blend without tasting first.

Make it without coconut milk: For a lighter, less creamy version, replace the coconut milk with 1 cup (240 ml) water or unsweetened, unflavored plant milk. Water keeps the lentils clean-tasting but less rich; plant milk can add sweetness or other flavors, so check its label. Add the replacement gradually and taste for salt before serving.

Add vegetables: Stir in 1 cup (about 100 g) chopped spinach during the final 2 minutes, or simmer small cubes of pumpkin or sweet potato with the lentils until tender. Sturdier vegetables need extra liquid and time, so check that both the vegetables and lentils are soft before adding the coconut milk. This changes the thickness, and you may need a little extra water.

Make a thicker side-dish version: Use 2 cups (480 ml) water instead of 2 1/2 cups and begin checking the lentils before the full simmer is finished. Keep the heat low and stir more often, since less liquid makes sticking more likely. For a soupier bowl, add hot water at the end rather than extending the simmer and overcooking the aromatics.

Storage and Reheating

Cool leftovers promptly and refrigerate them within 2 hours of cooking in a covered, airtight container. The curry keeps for 3 to 4 days in the refrigerator. It will thicken as the lentils absorb liquid, and the coconut milk may look slightly different after chilling; stir it as it warms rather than judging its texture straight from the fridge.

Reheat only the portion you plan to eat. Warm it in a saucepan over low to medium-low heat, stirring frequently and adding a splash of water if it is too thick. You can also microwave it in a covered, microwave-safe bowl, stirring partway through so it heats evenly. Reheat leftovers to 165°F (74°C), checking with a food thermometer, and avoid repeatedly cooling and reheating the whole batch. Freeze portions in airtight, freezer-safe containers for up to 2 to 3 months for best quality. Thaw in the refrigerator before reheating; the texture may be slightly grainier, but stirring well usually brings it back together.

Frequently Asked Questions

Are red lentils the same as Sri Lankan parippu dal? Split red lentils are a convenient choice for parippu because they cook quickly and soften into a creamy curry. The name parippu refers to a lentil or dhal preparation, and recipes differ by household and region. This version uses split red lentils, coconut milk, and a spiced tempering, but it is not the only way to prepare the dish.

Can I use brown or green lentils instead? You can, but they take longer to cook and stay firmer rather than melting into the same creamy texture. Follow the cooking time on the package, add water as needed, and wait to add the coconut milk until the lentils are tender. The final curry will be more textured and may need additional seasoning.

Why are my lentils still firm? They may need more time, or the simmer may have been too low to cook them steadily. Add hot water if the pot is getting dry, cover it partly, and simmer until the lentils mash easily against the side of the pan. Older dried lentils can also take longer, so use tenderness rather than the clock as the final check.

Can I make this curry ahead? Yes. Prepare it a day ahead, cool it promptly, and refrigerate it in a covered container. The flavor remains pleasant, but the lentils thicken overnight; reheat gently with a little water and check the salt again. For the freshest aroma, you can also cook the lentils ahead and make the onion tempering just before combining and serving.

Is this recipe vegan and gluten-free? The listed ingredients are plant-based and contain no gluten-containing ingredient. Check packaged curry powder and any substitute products if you need to avoid a specific ingredient, since blends and manufacturing practices vary. Serve with rice or a suitable gluten-free flatbread to keep the meal aligned with your needs.

What can I use if I cannot find curry leaves? You can leave them out; the lentils will still be tasty, though the tempering will lack curry leaves’ distinctive citrusy, herbal fragrance. A small bay leaf can be simmered with the lentils for a different aromatic note, but it is not an equivalent substitute. Remove it before serving, just as you remove the cinnamon stick.

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