Lebanese Lentil Soup
Shorbet AdasA foundational Lebanese soup in which red lentils dissolve into a smooth, nourishing base flavored with softened onion, cumin, and fresh lemon. This academy version teaches controlled sweating, proper lentil cooking, safe hot blending, and final seasoning by taste. The finished soup should be velvety and pourable rather than pasty, with earthy cumin and a clean lemon finish.
Know what you are cooking
Shorbet adas is prepared throughout Lebanese homes and professional kitchens, especially as a warming first course or simple meatless meal. Texture varies by household: some cooks leave it rustic, while others blend it completely smooth. Potato, carrot, rice, or additional warm spices may appear in family versions, but the core combination of lentils, onion, cumin, and lemon remains widely recognized.
Serve hot as a first course or light meal, with lemon wedges at the table. It is particularly suited to cool weather and meatless menus.
- Sweat onion without browning so its sweetness supports rather than dominates the lentils.
- Cook red lentils until fully collapsed and free of any chalky center.
- Blend hot soup safely to a uniform, velvety consistency.
- Balance cumin, salt, and lemon only after the lentils are tender.
- Adjust thickness while preserving a pourable soup consistency.
Ingredients
Digital kitchen scale · Measuring jug · Fine-mesh sieve · Chef’s knife · Cutting board · Heavy-bottomed pot with lid, at least 4-litre capacity · Wooden spoon or heat-resistant spatula · Immersion blender · Ladle
Method
- 1
Prepare the ingredients
Inspect the lentils and discard any stones or damaged pieces. Rinse thoroughly and drain. Dice the onion, mince the garlic, measure the spices, and juice the lemons.
Look, smell, feelThe final rinse water should be only lightly cloudy, with no visible debris among the lentils.SafetyUse a stable cutting board and keep raw produce, utensils, and hands clean. - 2
Sweat the onion
Heat the olive oil in the pot over medium-low heat. Add the onion and 2 g of the salt. Cook for about 7 minutes, stirring often, until soft and translucent without significant browning.
Look, smell, feelThe onion should look glossy and supple and smell gently sweet, with no dark or crisp edges.SafetyKeep the pot handle turned inward and reduce the heat if the oil smokes or the onion begins to scorch. - 3
Bloom the aromatics
Add the garlic, cumin, and black pepper. Stir continuously for 1 minute, just until fragrant.
Look, smell, feelThe cumin should smell warm and nutty, while the garlic remains pale rather than toasted brown.SafetySpices and garlic scorch quickly; have the measured water ready to add immediately. - 4
Simmer the lentils
Add the drained lentils, 1600 mL water, and the remaining 8 g salt. Stir, bring to a full boil, then immediately reduce to a steady simmer. Partially cover and cook for about 20 minutes, stirring several times and scraping the bottom. Add a little hot water if the lentils become too thick before they are tender.
Look, smell, feelThe lentils should lose their distinct shape and mash effortlessly against the side of the pot; no grain should have a firm or chalky center.SafetyWatch for foaming and boil-over. Lift the lid away from your face to avoid steam burns. - 5
Blend until velvety
Remove the pot from the heat and let vigorous bubbling subside. Keep the immersion-blender head fully submerged and blend until uniformly smooth, moving it around the pot without lifting it through the surface. Blend in additional hot water as needed for a thick but pourable consistency.
Look, smell, feelThe soup should coat a spoon evenly, flow from the ladle in a continuous ribbon, and contain no visible onion or lentil pieces.SafetyHot soup can cause severe burns. Do not splash. If using a countertop blender instead, work in small batches, vent the lid, cover it with a towel, and follow the manufacturer’s hot-liquid instructions. - 6
Rest, season, and serve
Rest the soup for 5 minutes. Stir in 60 mL lemon juice, taste, and add more gradually until bright but not sharply sour. Adjust salt and consistency, reheating briefly if necessary without prolonged boiling. Ladle into warm bowls and garnish with parsley if desired.
Look, smell, feelThe final flavor should begin with mellow lentil and cumin, followed by fresh lemon; the soup should remain smooth and pourable after resting.SafetyIf reheating after seasoning, bring the soup back to a safe serving temperature without allowing it to splatter.
Chef notes
- Red lentils naturally break down; complete tenderness before blending is more important than prolonged blending.
- The soup thickens substantially as it stands because the lentils continue to absorb water. Correct it with hot water in small additions.
- Add lemon only after the lentils are tender. Acid added early can slow softening and makes final acidity harder to control.
- For a more rustic Lebanese home-style texture, blend only partially while retaining the same cooking and safety controls.
- Lemon strength varies by fruit and season, so the measured quantity is a tasting range rather than a requirement to use every drop.
Common mistakes
- Browning the onion deeply, which gives the delicate soup a roasted or bitter note.
- Boiling too aggressively, causing scorching on the bottom or foaming over the pot.
- Stopping the simmer while the lentils still have a chalky center.
- Making the soup overly thick before resting; it will continue to tighten as it cools.
- Adding all the lemon at once rather than balancing it gradually.
- Lifting a running immersion blender above the soup and splashing hot liquid.
Practical substitutions
- Regular olive oil may replace extra-virgin olive oil with a milder flavor.
- A verified gluten-free vegetable stock may replace some or all of the water; reduce the added salt and season only after tasting.
- Brown or green lentils are not a direct substitution because they retain their shape and require a longer cooking time.
- Bottled lemon juice is not preferred; if unavoidable, use gradually because acidity and flavor vary.
- For an oil-free version, sweat the onion in small additions of water, understanding that the flavor and mouthfeel will be lighter.
Plan and store
Make ahead: Prepare up to 2 days ahead. For the freshest flavor, reserve part of the lemon juice and adjust the acidity after reheating. The soup will thicken in storage, so keep extra water available.
Storage: Cool promptly in shallow containers and refrigerate at 4°C or below within 2 hours of cooking, or sooner where local guidance requires. Keep covered and use within 3 days. Freeze in suitable containers for up to 2 months for best quality, leaving expansion space.
Reheating: Thaw frozen soup in the refrigerator. Reheat over medium-low heat, stirring frequently and adding water as needed, until it reaches at least 74°C throughout. Reheat only the quantity required and follow applicable local health guidance.
Plate and serve
Ladle approximately 400 mL into each warmed soup bowl. Finish with a small pinch of chopped parsley and serve lemon wedges separately so each diner can adjust the acidity.
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