Red Lentil Soup with Cumin and Lemon

Middle Eastern Fast Without Oil Published March 06, 2026

Red lentil soup is one of the great gifts of the Middle Eastern kitchen to the fasting table. It requires no oil at all — the lentils dissolve into a thick, silky porridge that carries cumin and lemon with startling intensity. Water-sautéing the onions is the key technique: a splash of water in a hot pan, stirring frequently, and the onions soften and sweeten just as they would in oil.

This is weeknight monastery cooking at its most practical. Twenty-five minutes from dry lentils to a bowl of soup thick enough to hold a spoon upright.

FASTING LEVEL: Fast Without Oil (cooked food permitted, no oil, no wine)
SERVINGS: 4
TIME: 30 minutes

INGREDIENTS

- 1 1/2 cups red lentils, rinsed
- 1 large onion, finely diced
- 4 cloves garlic, minced
- 1 tablespoon ground cumin
- 1 teaspoon ground coriander
- 1/2 teaspoon ground turmeric
- 1/4 teaspoon cayenne pepper (optional)
- 6 cups water or vegetable broth
- Juice of 2 lemons
- Salt and black pepper to taste
- Fresh cilantro or parsley, chopped, for serving

METHOD

1. Heat a large pot over medium heat. Add the diced onion with 3 tablespoons of water. Stir frequently, adding a tablespoon of water at a time as it evaporates, for 6-7 minutes until the onion is soft and translucent.

2. Add the garlic, cumin, coriander, turmeric, and cayenne. Stir for 30 seconds until fragrant — the dry heat blooms the spices more intensely than oil ever could.

3. Add the rinsed red lentils and water or broth. Bring to a boil, then reduce to a gentle simmer. Cook for 18-22 minutes, stirring occasionally, until the lentils have completely dissolved into a thick porridge.

4. Stir in the lemon juice. Season generously with salt and pepper. The soup should be bright and tangy — do not be shy with the lemon.

5. Serve in deep bowls topped with fresh herbs. A wedge of bread on the side is all you need.

NOTES

- Red lentils do not need soaking and cook faster than any other legume. They are the foundation of no-oil fasting cooking.
- The soup thickens considerably as it cools. Add water when reheating.
- Dry-toasting the cumin seeds in the empty pot before adding the onion intensifies the flavor further — crack them in the dry heat for 30 seconds, then proceed with the water-sauté.
- Keeps refrigerated for 5 days. Freezes well for 3 months.