Vegan Turkish Red Lentil Soup with Lemon and Mint Recipe

Vegan Turkish red lentil soup, often called mercimek çorbası, is a smooth, savory soup made with red lentils, vegetables, and warm spices. This stovetop version finishes with lemon and a fragrant mint-and-pepper oil, making it satisfying as a light meal or a first course; recipes vary across Turkey and from household to household.

Ingredients

1½ cups (285 g) dried red lentils, rinsed and picked over
2 tablespoons (30 ml) olive oil, divided
1 medium yellow onion, finely diced (about 1 cup or 150 g)
1 medium carrot, peeled and diced (about ¾ cup or 100 g)
1 medium Yukon Gold or other all-purpose potato, peeled and diced (about 1 cup or 180 g)
1 tablespoon (16 g) tomato paste
1 teaspoon (2 g) ground cumin
1 teaspoon (2 g) sweet paprika
6 cups (1.42 L) low-sodium vegetable broth
1¼ teaspoons (7.5 g) fine salt, or to taste
¼ teaspoon (0.5 g) ground black pepper
2 tablespoons (30 ml) fresh lemon juice, plus lemon wedges for serving
½ teaspoon (0.5 g) dried mint, for the finishing oil
⅛ teaspoon (about 0.3 g) Aleppo pepper or red pepper flakes, for the finishing oil

Instructions

Rinse the lentils in a fine-mesh sieve under cool running water, turning them with your fingers until the water runs mostly clear. Check for any small stones or debris and discard them. Red lentils do not need soaking. Dice the onion, carrot, and potato into small, fairly even pieces so they soften at a similar rate; set the prepared vegetables and measured spices near the stove.
Warm 1 tablespoon (15 ml) of the olive oil in a heavy 5- to 6-quart pot over medium heat. Add the diced onion and cook for 7 minutes, stirring every minute or two, until it is soft and translucent but not deeply browned. If it begins to stick, lower the heat and add a spoonful of water rather than turning the heat up. A gentle, even sauté builds a sweet base without giving the soup a scorched flavor.
Stir in the carrot and potato and cook for 4 minutes, stirring occasionally. Add the tomato paste, cumin, and paprika, then stir continuously for 1 minute so the paste darkens slightly and the spices become fragrant. Keep the mixture moving; paprika can taste bitter if it catches on the bottom of a hot pot.
Add the rinsed lentils, vegetable broth, salt, and black pepper. Stir well, scraping the bottom of the pot to loosen any tomato paste. Raise the heat until the broth reaches a gentle boil, which usually takes about 3 minutes, then reduce the heat to low. Partially cover the pot and simmer gently for 20 minutes, stirring once or twice. The lentils should be very soft and beginning to break apart, and the potato should crush easily against the side of the pot. If the soup boils vigorously, lower the heat to protect its texture and prevent sticking.
Take the pot off the heat and blend the soup until smooth with an immersion blender. Keep the blender head beneath the surface to reduce splashes. If using a countertop blender, let the soup cool briefly, work in small batches, and follow the blender maker’s directions for hot liquids; leave room for steam to escape rather than sealing a hot mixture tightly. Return the soup to the pot if needed. Stir in the lemon juice, taste, and adjust salt, pepper, or lemon. If it is thicker than you like, add hot water or broth a little at a time. Warm it over low heat for about 3 minutes, without bringing it back to a hard boil.
For the topping, warm the remaining 1 tablespoon (15 ml) olive oil in a small pan over low heat. Add the dried mint and Aleppo pepper and stir for about 20 seconds, just until fragrant; do not let the mint darken. Ladle the soup into bowls and drizzle the mint oil over each serving. Offer lemon wedges at the table so everyone can adjust the brightness to taste.

Tips

Use red lentils, not green ones, for the intended texture. Split red lentils soften quickly and blend into a smooth soup. Green or brown lentils hold their shape much longer and have a firmer, earthier result; if you use them, expect a different, more rustic soup and check the package directions for a longer simmer.
Choose broth with care. Low-sodium vegetable broth gives you more control over the final seasoning. If your broth is already salty, begin with ½ teaspoon salt, then taste after blending and add more only as needed. Water also works, though the finished soup will taste milder and may need extra seasoning.
Blend safely and adjust gradually. Hot soup expands in a sealed blender, so blend in small batches with a vent for steam, or use an immersion blender. Add liquid a few tablespoons at a time if the soup is too thick; it is easy to thin it, but difficult to correct a soup that has been watered down too far.
Make the mint oil gently. Dried mint and pepper need only a few seconds in warm oil to release their aroma. High heat can burn the herbs, so take the pan off the burner if the oil begins to smoke, and spoon the topping over the soup just before serving.

Serving Suggestions

Serve the soup hot in shallow bowls with lemon wedges, warm crusty bread, or Turkish-style flatbread for dipping. A simple side salad of chopped cucumber, tomato, parsley, and a little lemon makes a fresh contrast to the smooth, warm soup. For a more substantial meal, add a plate of olives and sliced vegetables or serve the soup before a grain or vegetable main dish.

The lemon is more than decoration: its acidity lifts the lentils and spices, especially if the soup has thickened while standing. Start with the measured lemon juice in the pot, then let diners add more at the table. Keep the mint oil in a small serving dish if you would like people to control how much they drizzle into each bowl.

Variations

For a slightly more traditional flavor profile, use Turkish red pepper paste, called biber salçası, in place of the tomato paste. It can be difficult to find outside Turkish or Middle Eastern grocery shops; use the same amount, and expect a deeper, fruitier pepper flavor. If the paste is hot, reduce or omit the Aleppo pepper in the topping. Tomato paste is a practical, widely available substitute and keeps the soup mild.

To make the soup spicier, increase the Aleppo pepper or red pepper flakes in the finishing oil, rather than adding a large amount directly to the pot. For a more pronounced cumin flavor, add another ¼ teaspoon when cooking the tomato paste, then taste before adding more. You can also replace the potato with an equal amount of peeled, diced sweet potato; it makes the soup a little sweeter and softer in flavor.

If you prefer a soup with texture, blend only part of it, or mash some of the lentils and vegetables with a potato masher. For a thinner, more pourable consistency, add broth after blending. A handful of chopped parsley scattered over the bowls is a fresh alternative to mint, though it gives the soup a greener, less herbal finish. These are flexible choices rather than rules: Turkish versions differ in their seasonings, toppings, and preferred thickness.

Storage and Reheating

Cool leftovers promptly and refrigerate them within 2 hours of cooking, in covered, shallow containers. The soup keeps for 3 to 4 days in the refrigerator. It will thicken as the lentils absorb liquid, so stir in a splash of water or broth when reheating. Reheat gently in a saucepan over medium-low heat, stirring frequently, until steaming throughout; avoid letting a thick soup sit unstirred on the bottom of the pot.

For microwave reheating, transfer a portion to a microwave-safe bowl, cover it loosely, and heat in short intervals, stirring between intervals so the center warms evenly. Add the mint oil after reheating for the freshest aroma. To freeze, cool the soup, portion it into freezer-safe containers with room for expansion, and freeze for up to 3 months for best quality. Thaw overnight in the refrigerator or reheat from frozen over low heat with a little added liquid, stirring as it loosens. Do not leave cooked soup at room temperature for extended storage.

Frequently Asked Questions

Do red lentils need to be soaked before cooking?
No. Rinsing is enough for this recipe. Red lentils are small, split lentils that cook quickly, and soaking can make them break down even faster. Pick through them before rinsing in case there are any bits of debris.

Can I make this soup without a blender?
Yes. The lentils and vegetables become soft enough to mash with a potato masher, though the result will be more rustic than a fully blended soup. You can also leave it unblended and serve it as a chunky lentil soup; stir well before ladling because the lentils settle as the soup stands.

Why did my soup become very thick?
Red lentils continue absorbing liquid as the soup cools, and the potato also adds body. Stir in hot water or vegetable broth a little at a time until it reaches the consistency you prefer. Taste again afterward, since extra liquid can dilute the salt, lemon, and spice.

Can I make it ahead?
Yes. The soup can be cooked, cooled, and refrigerated for up to 3 to 4 days, then reheated with a little added broth or water. For the brightest flavor, add the lemon juice near the end of cooking and make the mint oil shortly before serving, though both can be prepared ahead if needed.

Is this soup gluten-free?
The listed ingredients are naturally gluten-free, but check the label on your vegetable broth and any pepper paste if gluten cross-contact or added ingredients are a concern. Serve it with gluten-free bread or rice instead of wheat-based flatbread.

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