This hearty, protein-rich dahl soup with lemon, turmeric and ginger is deeply comforting and simple to make — a perfect bowl of everyday comfort food.
🍴Why you will love this recipe
A steaming bowl of lentil dahl soup feels healing and nourishing. The base combines two potent root spices — fresh ginger and turmeric — finished with a bright squeeze of lemon. The result is a soup that warms the body and lifts the spirits.
Dried red lentils break down when cooked, creating a naturally silky texture while delivering fibre, protein and other nutrients. This recipe is forgiving: you can blend it until smooth, leave it chunky, or mash it lightly. It also freezes well, so making a larger batch for the freezer is a great option for busy weeks.
📝 What you need
Ingredients
Red lentils — Dried red lentils are ideal for soup because they soften and break down quickly, giving a thick, luscious texture. You can combine red lentils with yellow split peas if you like, but note split peas take longer to cook.
Fresh root ginger — Fresh ginger gives a bright, spicy lift that is central to the flavour profile of this healing soup. Pre-prepared ginger can save time, but fresh root ginger provides the best zing.
Ground turmeric — Ground turmeric adds deep, earthy flavour and the signature golden colour. If you have fresh turmeric it will intensify the aroma and flavour, but ground turmeric works perfectly for most kitchens.
👩🏽🍳 How to make your lentil dahl soup
For a clear, printable ingredient list and step-by-step instructions, see the Recipe section below.
Begin by peeling and finely chopping the onion and carrots, then fry gently in a large saucepan with a little oil until starting to soften.
Peel and finely chop the ginger, add it to the pan with the crushed garlic, then peel and chop the potato and add that in too.
Stir through the turmeric, rinse the red lentils and add them to the pan. Pour in the vegetable stock, simmer until the lentils are tender, then stir through the greens and lemon juice, season to taste and serve.
🔪 Top Tips & FAQs
Consistency — Choose the texture you prefer: blitz the soup to a smooth purée, mash the larger pieces for a rustic texture, or leave it chunky. Each variation is delicious.
Spiciness — For a spicier version add 1/2 teaspoon crushed chilli flakes with the turmeric, or stir in a finely chopped fresh chilli when you add the potato.
Freezing — The soup freezes very well. If you plan to freeze, consider chopping the spinach or kale finely or blending the soup smooth before freezing, as leafy greens can change texture after thawing. Alternatively, leave the greens out and add fresh leaves to the soup when reheating.
Storage — Store in an airtight container in the fridge for 3–4 days. Flavours often deepen after a day.
Frequently Asked Questions
Can I freeze my dahl soup? Yes. Freeze in individual portions for convenient meals. If freezing with greens included, chop them small or blend the soup to reduce changes in texture. Alternatively add fresh greens after reheating.
How long will the soup keep in the fridge? The soup keeps well for 3–4 days in an airtight container and often tastes even better after the flavours meld for a day.
What else can I make with dried red lentils? Red lentils are excellent in thick stews and curries; they create a creamy base in dishes such as slow-cooker butternut dhal or lentil shepherd’s pie. Their quick-cooking, soft texture makes them very versatile in plant-based cooking.
🍽 If you liked that…
If you enjoy this soup, try it alongside other simple vegan soups and stews that focus on seasonal vegetables and bold spices. These kinds of recipes are great for meal-prep and for keeping weeknight cooking easy.
-
Curried Parsnip Soup
-
Butternut Slow Cooker Dahl
-
Creamy Green Lentil Dahl
-
Vegan Leek & Potato Soup
📖 Recipe
Dahl Soup (Lentil Soup with lemon and turmeric)
Kate Ford | The Veg Space
Ingredients
- 2 tablespoons rapeseed or sunflower oil
- 1 onion, peeled and finely chopped
- 2–3 cm fresh root ginger, peeled and finely chopped
- 1 garlic clove, crushed
- 2 carrots, peeled and sliced
- 2 teaspoons ground turmeric
- 1 potato, peeled and diced
- 150 g dried red lentils, rinsed
- 1 litre vegetable stock
- Handful of spinach or curly kale (stalks removed)
- 125 ml dairy-free milk (optional for creaminess)
- 1 lemon, juiced
Instructions
- Heat the oil in a large saucepan or casserole. Add the chopped onion and carrots and fry gently for 2–3 minutes until they begin to soften.
- Peel and chop the ginger (a teaspoon is handy to peel ginger quickly). Add the ginger to the pan with the crushed garlic and cook briefly to release the aromas.
- Stir in the turmeric, then add the diced potato.
- Rinse the red lentils in a sieve and add them to the pan, then pour in the vegetable stock.
- Bring to the boil, then reduce the heat and simmer for 20–25 minutes until the lentils and potato are soft.
- Add the spinach or kale and cook for another minute until wilted. Remove any large stalks if using kale.
- Stir through the dairy-free milk if using, add the juice of the lemon, and season with salt and black pepper to taste. Serve hot.
Notes
The texture of the soup depends on your preference: blend it smooth, mash lightly for a rustic finish, or keep it chunky. For extra heat add 1/2 teaspoon crushed chilli flakes with the turmeric or a fresh chopped chilli with the potato. If freezing, consider blending before freezing or adding fresh greens when reheating to preserve texture.
Nutrition (per serving)
Calories: 281 kcal • Carbohydrates: 40.3 g • Protein: 12.7 g • Fat: 8.3 g • Fiber: 14.7 g • Sodium: 50 mg
If you make it, take a photo and note any tweaks you tried — small changes help make the recipe your own.
Free 4-Week Vegan Meal Plan
If you enjoy planning ahead, a simple four-week vegan meal plan with shopping lists can make weeknight cooking much easier and help you rotate nourishing, budget-friendly meals like this dahl soup.
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