Lebanese Lentil Soup

This Lebanese lentil and lemon soup balances earthy lentils with tangy citrus and tender greens for a vibrant, comforting meal.

Lebanese brown lentil soup in a bowl with a dollop of yogurt served with pieces of potato and lentils visible

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Why It Works

  • Browning the onions in olive oil builds depth that balances the soup's lemony acidity.
  • Adding the lemon juice off heat keeps the flavor bright and vibrant.

I moved to Southern California in 1998, and one of the first people to welcome me was Nadia Fakkreddine, a Lebanese mother of four with a knack for feeding everyone around her. She's about my mother's age—and just as gifted in the kitchen. For years, we lived one street apart, and whenever she made dishes she knew my family loved, she'd send a plate over—dishes like ejjeh (a fritter-like egg dish with herbs that's pronounced egga in the Egyptian dialect and ejjeh in the Levant) or ma'amoul (crumbly semolina cookies stuffed with dates or nuts). When my daughter Keya was born, Nadia became her honorary grandmother and, over the years, a frequent deliverer of fattoush, the salad Keya came to love most.

One afternoon years ago, Keya and I stopped by Nadia's just as she'd finished making her lentil and lemon soup (adas bi hamoud). Naturally, she offered us a taste, and I fell in love with its bright, tangy broth and tender brown lentils. 

A pot of cooked lentils with a wooden spoon a hand holding a lentil above the pot

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Nadia is from Beirut, and she says that in the part of the city where she grew up, lemon, garlic, Swiss chard, cumin, and cilantro were essential to this lentil soup. She taught me how to make adas bi hamoud the day I first tasted it, and it remains one of my favorite soups to make and eat.

The process begins by sorting the lentils to remove any stray debris, then rinsing them to wash away dust and residue so the broth doesn't turn cloudy. The lentils simmer in water until tender but still intact, while onions brown separately in olive oil, building a savory base that balances the soup's lemony acidity.

After the onions are cooked, they're set aside, and garlic and cilantro (or parsley) are quickly sautéed in the same skillet just until fragrant. The herbs should wilt but not brown—this keeps their flavor fresh and aromatic. 

A pan of cooked lentils with caramelized onions being added from a separate dish

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Once the lentils are soft, they're seasoned with earthy cumin, then combined with the browned onions and diced potatoes, which thicken the broth as they cook. Chopped Swiss chard is added toward the end so it cooks briefly and keeps its structure, its minerality adding another layer of flavor. 

The soup is finished with the sautéed garlic and herb mixture and a generous pour of lemon juice that brightens every spoonful. The result is tangy and aromatic, with creamy lentils, tender greens, and just enough potato to give it body. The slight sweetness of the onions and the gentle bite of the garlic round out the flavor.

In just under an hour, humble brown lentils are transformed into a soup that's both comforting and lively. While it's not traditional, I like to serve this soup with a dollop of labneh or sour cream. It's a dish that feels just right on a crisp evening, served alongside salad and toasted bread or folded into a bigger meal for friends. It's a soup that I'll always make to honor my dear friend Nadia.

Person adding a spoonful of yogurt to a bowl of lentil soup

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Recipe Details

Lebanese Lentil Soup

Cook 40 mins
Total 40 mins
Serves 4 to 6
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Ingredients

  • 1 pound brown lentils (454 g, about 2 1/4 cups), picked over and rinsed

  • 6 cups (1.4 L) water

  • 5 tablespoons (75 ml) extra-virgin olive oil, divided

  • 1 1/2 large white onions (about 15 ounces; 425 g), finely chopped

  • 2 large cloves garlic, minced

  • 1 cup (40 g) fresh cilantro or parsley, chopped

  • 1 tablespoon (9 g) Diamond Crystal kosher salt, plus more for seasoning; for table salt, use half as much by volume or the same weight

  • 8 ounces (227 g) waxy potatoes (such as new potatoes or Yukon Gold), cut into 1/2-inch pieces

  • 2 teaspoons ground cumin

  • 4 cups chopped Swiss chard (4 ounces from 1 small bunch) (see notes)

  • 5 tablespoons (75 ml) fresh lemon juice, plus more to taste (from 2 lemons)

  • Labneh, for serving, optional

Directions

  1. In a large pot, add lentils and water. Bring water to a boil over medium-high heat. Stir briefly and reduce heat to a simmer. Cook, stirring occasionally, adjusting heat as needed to maintain a simmer, until lentils are tender but remain intact, about 15 minutes. (Proceed to steps 2 and 3 while lentils cook, and if you are not finished with the onions and herb mixture by the time the lentils are tender, turn off the stove.)

    A pot containing lentils cooking on a stovetop

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  2. Meanwhile, in a medium stainless-steel skillet, heat 4 tablespoons olive oil until shimmering. Add onions and cook, stirring often, until softened and beginning to brown, 5 to 7 minutes. Transfer onions to small bowl and set aside. (Do not wipe out skillet.)

    Onions sauting in a pan on a stovetop surface

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  3. In now-empty skillet, add remaining 1 tablespoon oil and heat until shimmering. Add garlic and cook until fragrant, about 30 seconds. Stir in cilantro or parsley and cook until wilted, about 15 seconds. Transfer to a second small bowl and set aside.

    Hand adding minced garlic from an orange dish into a skillet with oil on a stovetop

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  4. Stir salt into the lentils. Add potatoes, cumin, and reserved onion mixture to lentils. Return to a simmer and cook, covered, stirring occasionally, until potatoes are tender, 10 to 15 minutes.

    Cooking pot with lentils diced onions and potato chunks

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  5. Stir in Swiss chard and cook until it turns bright green, about 3 minutes. Off-heat, stir in lemon juice, and reserved garlic-herb mixture. Season with additional salt and lemon juice to taste. Top with a dollop of labneh, if desired. Serve.

    Adding greens to a pot of lentil soup

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Special Equipment

Large pot, medium stainless steel skillet

Notes

You can substitute Swiss chard with an equal amount of chopped mature spinach, if desired.

Make–Ahead and Storage

Leftovers can be refrigerated in an airtight container for up to 4 days or frozen in an airtight container for up to 3 months If freezing, thaw in the refrigerator. Reheat gently before serving, adjusting consistency with water as needed.

Nutrition Facts (per serving)
271 Calories
13g Fat
33g Carbs
10g Protein
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Nutrition Facts
Servings: 4 to 6
Amount per serving
Calories 271
% Daily Value*
Total Fat 13g 16%
Saturated Fat 2g 10%
Cholesterol 1mg 0%
Sodium 688mg 30%
Total Carbohydrate 33g 12%
Dietary Fiber 9g 31%
Total Sugars 6g
Protein 10g
Vitamin C 26mg 129%
Calcium 78mg 6%
Iron 5mg 25%
Potassium 772mg 16%
*The % Daily Value (DV) tells you how much a nutrient in a food serving contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.
(Nutrition information is calculated using an ingredient database and should be considered an estimate.)