Red lentil soup is one of the oldest prepared foods in human history. Across the Middle East, the Indian subcontinent, the Mediterranean, and North Africa, variations of this humble, warming dish have nourished people for thousands of years. There is a reason for that longevity: it is one of the most satisfying, affordable, and nutritionally complete meals that can be prepared with minimal equipment and modest ingredients.
This version draws inspiration from the Turkish mercimek çorbası — a smooth, warmly spiced soup finished with a smoky red pepper and butter drizzle that transforms the bowl from simple to extraordinary. The drizzle takes less than two minutes to prepare, but it is the detail that elevates everything.
If you cook this soup once, you will understand why it has endured.
Ingredients (Serves 6)
- 350g red lentils, rinsed thoroughly
- 1 large onion, diced
- 4 garlic cloves, minced
- 2 medium carrots, diced
- 2 stalks celery, diced
- 1 can (400g) chopped tomatoes
- 1.5 litres vegetable stock
- 2 teaspoons ground cumin
- 1 teaspoon ground turmeric
- 1 teaspoon smoked paprika
- ½ teaspoon ground coriander
- ½ teaspoon chilli flakes
- 3 tablespoons olive oil
- Juice of 1 large lemon
- Salt and black pepper to taste
For the red pepper drizzle:
- 3 tablespoons olive oil or vegan butter
- 1 teaspoon smoked paprika
- ½ teaspoon chilli flakes
To serve: Fresh parsley or coriander, lemon wedges, warm flatbread
Method
Build the base: Heat olive oil in a large pot over medium heat. Add the onion, carrots, and celery with a pinch of salt. Cook for 10 minutes until softened. Add garlic and all the spices. Cook for one minute.
Add liquids: Add the chopped tomatoes and stir for two minutes. Add the rinsed lentils and vegetable stock. Bring to a boil, then reduce to a steady simmer. Cook uncovered for 20 to 25 minutes until the lentils have completely broken down and the soup is thick.
Blend: Use an immersion blender to blend about two-thirds of the soup, leaving some texture. Alternatively, blend all of it for a completely smooth result. Stir in the lemon juice and adjust seasoning.
Make the drizzle: In a small pan, heat the olive oil over medium heat. Add the smoked paprika and chilli flakes. Swirl for 30 seconds — the oil will turn a deep red and become fragrant. Pour immediately over the bowls of soup.
Serve: Ladle into warmed bowls, drizzle with the red pepper oil, and garnish with fresh herbs and lemon wedges. Serve with warm flatbread for dipping.
Nutrition and Storage
Red lentils are extraordinarily rich in plant-based protein, iron, and folate. They also cook faster than any other lentil variety and require no soaking. This soup provides approximately 18 grams of protein and 14 grams of fibre per serving, making it one of the most nutritionally efficient meals in plant-based cooking.
Refrigerate for up to five days or freeze for up to four months. It thickens considerably on storage — add stock or water when reheating.
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