Red lentils are the reason this soup is on the list: they need no soaking, they collapse into a thick, filling texture in twenty-odd minutes, and a bag of them costs very little. Everything else is the standard onion-carrot-celery base, plus a squeeze of lemon at the end that does more for the flavour than any extra spice would.
Heat the oil in a large saucepan over medium heat. Add the onion, carrots and celery and cook for 8 minutes, until softened.
Add the garlic, cumin and turmeric and cook for 1 minute, stirring, until fragrant.
Add the rinsed lentils, stock and chopped tomatoes. Stir, bring to a boil, then reduce the heat and simmer for 20–25 minutes, until the lentils are soft and the soup has thickened.
Season with salt and pepper. For a smoother soup, blend some or all of it with a stick blender.
Stir in a squeeze of lemon juice to taste before serving.
Tips
Rinse the lentils in a sieve until the water runs clear — it keeps the soup from tasting starchy.
The lemon at the end is not optional in spirit: it lifts everything.
The soup thickens as it cools, so loosen it with extra stock or water when reheating.
Substitutions
Use chicken stock instead of vegetable stock if it doesn't need to be vegetarian.
Swap the turmeric and cumin for a couple of teaspoons of curry powder.
Add a handful of spinach at the end for extra greens.
Storage
Refrigerate for up to 4 days or freeze for up to 3 months. Reheat until piping hot throughout.
Food safety
Divide a big batch between shallow containers so it cools quickly, and refrigerate within two hours. Reheat each portion once, to a full simmer, rather than reheating the whole pot repeatedly.
Allergens as written
Celery
Check the stock (often contains celery, and sometimes wheat or milk)
Nutrition estimate
Calories: Roughly 260 kcal per serving (estimate, based on 4 servings)
Protein: Roughly 15g
Carbohydrates: Roughly 38g
Fat: Roughly 6g
Half a bag of lentils and not much else? Ask Eat In AI what else you can make with what's already in the press.
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