Turkish lentil soup, or mercimek çorbası, is a smooth, savory soup made with red lentils, vegetables, and warming spices, usually finished with lemon. It is served across Turkey in many household and regional variations; this straightforward version balances earthy cumin with a bright citrus finish.
Ingredients
- 1½ cups (285 g) red lentils, picked over and rinsed
- 1 medium yellow onion (about 150 g), finely chopped
- 1 medium carrot (about 100 g), peeled and diced
- 1 small potato (about 150 g), peeled and diced; it adds body and can be omitted
- 2 garlic cloves (about 6 g), finely chopped
- 2 tablespoons (30 ml) olive oil
- 1 tablespoon (16 g) tomato paste
- 1 tablespoon (16 g) Turkish red pepper paste, optional; if unavailable, use another tablespoon of tomato paste and add a pinch of paprika. The soup will be milder and less peppery.
- 1 teaspoon ground cumin (about 2 g)
- ½ teaspoon sweet paprika (about 1 g)
- 7 cups (1.65 L) water or low-sodium vegetable broth
- 1 teaspoon fine salt (about 5 g), plus more to taste
- ¼ teaspoon black pepper (about 0.5 g)
- 2 tablespoons (30 ml) fresh lemon juice, plus lemon wedges for serving
- For an optional finish: 1 tablespoon (14 g) butter or olive oil and ½ teaspoon pul biber (Aleppo-style pepper flakes)
- For serving: 2 tablespoons (about 4 g) chopped fresh parsley or mint, optional
Instructions
- Prepare the lentils and vegetables. Check the lentils for small stones or debris, then rinse them in a fine-mesh sieve under cool running water until the water runs mostly clear. Chop the onion, carrot, and potato into small pieces so they soften at a similar pace. Rinsing removes loose starch and dust; soaking is not needed for red lentils.
- Soften the vegetables. Warm the olive oil in a large, heavy pot over medium heat. Add the onion and carrot and cook for 5 minutes, stirring occasionally, until the onion is translucent and the carrot begins to soften. Stir in the garlic and cook for 30 seconds, just until fragrant. If the onion starts to brown quickly, lower the heat rather than adding more oil.
- Toast the pastes and spices. Add the tomato paste, red pepper paste if using, cumin, and paprika. Stir for about 1 minute, scraping the bottom of the pot so the pastes do not catch. Briefly cooking the paste deepens its savory flavor. If using only tomato paste, the soup will still be flavorful; the optional pepper paste gives it a more distinct sweet-pepper note.
- Simmer until tender. Add the rinsed lentils, diced potato, water or broth, salt, and black pepper. Stir well and bring the pot to a boil over medium-high heat. Reduce the heat to maintain a gentle simmer and partially cover the pot, leaving a small gap for steam. Cook for 22 minutes, stirring every few minutes, until the lentils have collapsed and the potato and carrot mash easily when pressed with a spoon. If foam gathers on top, skim it off. Keep the simmer gentle to prevent sticking on the bottom.
- Blend the soup. Take the pot off the heat. Use an immersion blender to puree the soup until smooth, moving the blender around the pot and keeping its head submerged to reduce splashing. Alternatively, blend in batches in a countertop blender, filling it no more than halfway and venting the lid according to the blender’s instructions; hot liquid expands. Return the blended soup to the pot if needed.
- Adjust the texture and seasoning. Stir in the lemon juice. If the soup is thicker than you like, add hot water a little at a time until it pours easily from a ladle. Taste and adjust the salt, pepper, and lemon. Warm it over low heat for 1 to 2 minutes, stirring, but do not let it boil hard after blending. The soup should taste savory first, with a clear but not sharp citrus note.
- Make the optional pepper finish. In a small pan, warm the butter or olive oil over low heat. Stir in the pul biber for about 20 seconds, just until fragrant, then remove the pan from the heat. Drizzle a little over each bowl, garnish with parsley or mint if desired, and serve with lemon wedges. Watch the pepper closely: it can turn bitter if it scorches.
Tips
- Use red or yellow lentils. Split red lentils are the usual choice for a silky texture and cook quickly without soaking. Yellow split lentils also work, though their color and flavor may differ slightly. Green or brown lentils stay firmer and take longer to soften, so they are not a direct swap for this smooth, quick-cooking version.
- Choose water or broth to suit your pantry. Water lets the lentils, vegetables, cumin, and lemon come through clearly. Low-sodium vegetable broth makes the soup a little more savory; taste before adding extra salt because prepared broth can already be salty.
- Keep the heat moderate after adding lentils. A vigorous boil can make the bottom catch before the lentils are fully tender. Stir regularly, especially around the center and edges of the pot. If the soup becomes too thick while simmering, add a splash of water rather than letting it scorch.
- Blend carefully and season afterward. The soup can be left slightly textured if you prefer, but a thorough blend gives it the familiar smooth consistency. Lemon and salt are best adjusted after blending, when you can judge the finished flavor and thickness.
Serving Suggestions
Serve the soup hot in bowls with lemon wedges so each person can add citrus to taste. A drizzle of the warm pepper butter or oil gives each serving a fragrant, gently spicy finish, while chopped parsley or mint adds freshness. Crusty bread or warm flatbread is useful for scooping and makes a simple meal feel complete.
For a fuller Turkish-inspired spread, pair the soup with a chopped tomato-and-cucumber salad, olives, or a small plate of pickled vegetables. These crisp, tangy sides contrast with the soup’s soft texture. If serving it as a first course, keep portions modest and follow with grilled vegetables, rice, or another main dish. Because it is filling, a bowl with bread can also stand on its own for lunch.
Variations
Make it without potato: Leave out the potato and add another small carrot, or simply proceed without replacing it. The soup will be a little less thick, so blend it first and add liquid gradually. Potato is a convenient way to add body, but it is not essential to the recipe.
Adjust the pepper: Pul biber, also called Aleppo-style pepper, is a mildly fruity Turkish pepper flake used in many versions of the finishing drizzle. If you cannot find it, use mild red pepper flakes sparingly or sweet paprika. Ordinary hot chili flakes can taste sharper, so start with a pinch. For a no-heat finish, use paprika alone or leave the drizzle out.
Add a more pronounced herb note: Stir a little dried mint into the soup near the end of cooking, or serve fresh mint at the table. Mint and lemon suit the lentils well, but parsley gives a milder, greener flavor. Start with a small amount of dried herbs because their flavor concentrates as they simmer.
Make it richer or lighter: The optional butter finish adds richness, while olive oil keeps the topping dairy-free. For a lighter-tasting bowl, skip the topping and use water instead of broth; the soup will still have body from the lentils and potato. Avoid adding cream if you want the bright lemon and pepper flavors to remain prominent.
Storage and Reheating
Cool leftover soup promptly and refrigerate it within 2 hours of cooking, in a shallow covered container. It keeps for 3 to 4 days in the refrigerator. The lentils continue to absorb liquid as the soup sits, so expect it to thicken; stir in water or broth when reheating until it reaches the consistency you want.
Reheat a portion in a saucepan over medium-low heat, stirring often, or use a microwave-safe bowl and pause to stir during heating. Reheat leftovers to 165°F (74°C), as recommended by USDA FSIS, and check with a food thermometer. Avoid repeated cycles of cooling and reheating; warm only the amount you plan to eat. If the soup has been left at room temperature for more than 2 hours, discard it rather than saving it.
For longer storage, freeze cooled soup in airtight freezer-safe containers, leaving a little space at the top for expansion. It is best used within 2 to 3 months for quality. Thaw it overnight in the refrigerator, then reheat as directed. The texture may look slightly separated after thawing; stirring while it warms, or briefly blending it again, brings it back together.
Frequently Asked Questions
Do I need to soak red lentils before making Turkish lentil soup?
No. Rinse them well and add them directly to the pot. Red lentils are split and soften quickly during the 22-minute simmer, so soaking is unnecessary and can make them break down even faster.
Why is my soup thicker after it cools?
Lentils absorb liquid as they rest, so a thickened soup is normal. Add a little water or broth while reheating and stir until smooth. Add it gradually so you do not thin the soup more than you want.
Can I make this soup without a blender?
Yes. Simmer the vegetables until very soft and mash the soup with a potato masher for a rustic texture. It will not be as uniformly smooth, but the lentils naturally break down and give it a creamy consistency. A countertop blender or immersion blender makes the finish smoother.
Is Turkish lentil soup spicy?
This version is gently seasoned rather than hot. Cumin and sweet paprika add warmth, and the optional pul biber topping can be adjusted or omitted. For more heat, add a small pinch of hot pepper flakes to the topping; for a mild bowl, use paprika only.
Can I make it ahead?
Yes. Make the soup up to 3 to 4 days ahead and refrigerate it promptly. It often tastes well integrated after resting, but it will thicken, so loosen it with water or broth as it reheats. For the freshest flavor, add lemon and the pepper topping just before serving.
What can I use instead of Turkish red pepper paste?
It is optional here. Replace it with an equal amount of tomato paste and a pinch of paprika, or leave it out. The soup will be less pepper-forward, but the cumin, vegetables, lemon, and optional pul biber still provide plenty of flavor.
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