Rasam Recipe - South Indian Spiced Tomato Broth (10 Minutes)

Why This Recipe Works

Rasam is the recipe that breaks every rule of what people expect Indian food to be. It's not rich. It's not heavy. It's not creamy. It's a thin, fiery, tangy broth — more like a spiced consommé than a curry — that you sip from a cup or pour over rice. And it might be the most underrated dish in Indian cooking. In South India, Rasam is as essential as dal is in the North — it's served with every single meal, typically as the second course after sambar and before curd rice. "Rasam recipe" has been trending heavily in global wellness and immunity circles through 2025–2026, with food writers calling it "India's healing soup" and "the original turmeric latte" — because Rasam is packed with black pepper (which activates turmeric absorption), garlic, cumin, tomato, and tamarind, all of which have well-documented anti-inflammatory and digestive properties.

But let's be honest about why Rasam is actually great: it's not the health benefits, it's the taste. A properly made Rasam is an explosion of flavour — sour from tamarind, spicy from black pepper and dried chilli, aromatic from cumin and curry leaves, sweet-acidic from tomato, and pungent from garlic and asafoetida. All in a thin, clear, intensely flavoured broth that you can make from scratch in 10 minutes. At Pick N Save, we stock TFS Rasam Powder (the ready-made spice blend that handles the entire spice mix in one teaspoon), tamarind, fresh tomatoes, curry leaves, and all individual spices for building from scratch. This is the recipe that links your entire South Indian sub-cluster — the same curry leaves, mustard seeds, and tamarind from our Idli Sambar, Masala Dosa, Chicken 65, and Prawn Curry.

Step-by-Step Method

Step 1: Prepare the Tamarind-Tomato Base (3 Minutes)

Soak a walnut-sized piece of tamarind (Fudco Tamarind Slabs 200g) in ½ cup (120ml) of warm water for 5 minutes. Squeeze, mash, and strain through a sieve to extract a thick, sour tamarind water. Discard the pulp. Alternatively, use 1 tablespoon of ready-made tamarind paste mixed with 120ml of water.

In a saucepan, combine the tamarind water with 2 medium tomatoes, finely chopped (Fresh Vine Tomato 500g), 500ml of water, 2 tablespoons of TFS Rasam Powder (TFS Rasam Powder 100g — this contains the pre-ground blend of coriander, cumin, black pepper, red chilli, turmeric, and fenugreek in the traditional South Indian ratio), ½ teaspoon of turmeric (TFS Haldi Powder Rajapuri 100g), 4 cloves of garlic, lightly crushed (Fresh Garlic Medium — crushing releases the flavour; don't chop), and salt to taste. Bring to a boil over medium-high heat.

Building from scratch (no Rasam Powder): Replace the 2 tablespoons of Rasam Powder with: 1 teaspoon of ground coriander (TFS Dhana Coriander Powder 100g), 1 teaspoon of ground cumin (TFS Jeera Powder 100g), 1 teaspoon of coarsely crushed black pepper (TFS Black Pepper Whole 100g — crush in a mortar, don't grind fine; the coarse pepper is the signature heat of Rasam), ½ teaspoon of red chilli powder (TFS Red Chilli Powder 100g), and ¼ teaspoon of turmeric. The black pepper MUST be coarsely crushed, not finely ground — the visible pepper flecks and the sharp, building heat are what define Rasam.

Step 2: Simmer Until Frothy (4 Minutes)

Once the mixture reaches a boil, reduce the heat to medium-low and simmer for 3–4 minutes. The tomatoes will break down, the tamarind will integrate, and the surface will develop a light, foamy froth. This froth is the sign that the Rasam is ready — the proteins in the tamarind and tomato create a natural foam as the broth simmers. Don't simmer longer than 5 minutes — Rasam should taste fresh and vibrant, not cooked-down and dull. Overcooked Rasam loses its bright acidity.

Taste and adjust: it should be sour (tamarind), spicy (pepper), and tangy (tomato) in that order. If not sour enough, add more tamarind water. If not spicy enough, add more crushed black pepper. If too sour, add a pinch of jaggery or sugar.

Step 3: Make the Tadka (Tempering — 1 Minute)

In a small tadka pan or butter warmer, heat 1 tablespoon of ghee or sunflower oil (KTC Butter Ghee 500g or KTC Pure Sunflower Oil) over high heat. Add ½ teaspoon of mustard seeds (TFS Mustard Seeds Large 100g) — let them pop. Add a pinch of asafoetida / hing (Ramdev Hing 100g) — it'll foam. Add 10–12 fresh curry leaves (Fresh Curry Leaves) — they'll crackle violently. Add 2 dried red chillies, broken in half — they'll darken. Add 2 cloves of garlic, sliced thin — they'll turn golden in 10 seconds. Turn off the heat immediately.

Pour the entire tadka — sizzling ghee, crackling spices, everything — directly into the pot of simmering Rasam. The familiar, dramatic sizzle when hot oil meets wet broth fills the kitchen with the unmistakable aroma of South Indian cooking. Stir once. Add a handful of chopped fresh coriander (Fresh Coriander Bunch).

Step 4: Serve

Rasam is served two ways — both are traditional:

• As a soup / broth (sipped from a cup): Pour into small cups or bowls and sip hot — the way it's served as the second course in a South Indian meal, between sambar-rice and curd-rice. The thin, fiery broth warms, clears the palate, and aids digestion. This is also the way wellness enthusiasts drink it as "Indian healing broth."
• Over rice (the main-course method): Pour a generous ladle of hot Rasam over steaming white basmati rice (Tilda Basmati Rice 5kg). Mix lightly with a spoon. The rice absorbs the tangy broth, and each spoonful delivers the sharp tang of tamarind, the heat of pepper, and the aroma of curry leaves. This is how Rasam is eaten daily in every South Indian household.

For a complete South Indian meal: serve rice with Sambar as the first course, Rasam as the second, and curd rice (plain yogurt mixed with rice, tempered with mustard seeds and curry leaves) as the third. Add Mango Pickle, papad (Lijjat Plain Papad 200g), and a banana for the traditional banana-leaf meal experience.

Pro Tips from Our Store

• TFS Rasam Powder is the one-spice shortcut: TFS Rasam Powder 100g contains the entire Rasam spice blend — coriander, cumin, black pepper, red chilli, turmeric, and fenugreek — pre-roasted and ground in the traditional South Indian ratio. Two tablespoons replaces 6 individual spices. One 100g packet makes 5–6 batches of Rasam — cost per batch under 50p. This is the most efficient spice product in your entire kitchen.
• Coarse black pepper — the signature heat: Rasam's heat comes from coarsely crushed black pepper (TFS Black Pepper Whole 100g), not chilli. The pepper delivers a sharp, building, throat-warming heat completely different from chilli burn. Crush the peppercorns in a mortar and pestle — you want visible flecks and chunks, not a fine powder. Pre-ground pepper from a mill is too fine and disappears into the broth. The coarse crunch when you sip is part of the Rasam experience.
• Don't over-simmer — 4 minutes maximum: Rasam should taste fresh, bright, and tangy — like a vibrant broth, not a cooked-down sauce. More than 5 minutes of simmering dulls the tamarind tang, evaporates the volatile aromatics, and produces a flat, lifeless result. Bring to a boil, simmer 3–4 minutes until frothy, do the tadka, serve. Speed is flavour.
• Crushed garlic, not chopped: Crushing garlic cloves with the flat of a knife releases allicin — the compound responsible for garlic's pungent flavour and its well-documented antimicrobial properties. Chopping garlic finely distributes it throughout the broth but doesn't release allicin as effectively. Leave the crushed cloves whole in the broth — they infuse their flavour without you having to eat raw garlic pieces.
• Rasam is practically zero-calorie: A cup of Rasam contains approximately 35 calories — it's mostly water, tomato, and spices. This makes it one of the most nutrient-dense-per-calorie foods in Indian cuisine. All the vitamins from the tomato, the curcumin from turmeric, the piperine from black pepper (which increases curcumin absorption by 2,000%), and the antimicrobial properties of garlic — in under 40 calories. No wonder wellness circles are calling it a superfood.
• The tadka is the final aromatic punch: The same tadka technique from our Dal Tadka — mustard seeds, curry leaves, hing, garlic, dried chilli — poured sizzling into the finished Rasam. This final aromatic blast is what transforms a simple tomato-tamarind broth into something that smells like a South Indian kitchen and tastes like home. Don't skip it.

Variations to Try

• Pepper Rasam (Milagu Rasam — Cold & Flu Remedy): Double the black pepper to 2 teaspoons coarsely crushed. Add an extra 4 cloves of garlic. Skip the tomato. The result is a fiery, peppery, garlic-heavy broth that's the traditional South Indian remedy for colds, flu, congestion, and sore throats. It's not subtle — it's intensely peppery and clears sinuses within seconds. Drink hot from a cup.
• Lemon Rasam (Elumichai Rasam — No Tamarind): Replace the tamarind with the juice of 2 lemons (Lemon Loose Yellow Big 3 pcs), added at the very end after turning off the heat (lemon juice turns bitter if boiled). Lemon Rasam is brighter, fresher, and lighter than the tamarind version — a summer variation.
• Mysore Rasam (Coconut-Enriched): Grind 2 tablespoons of desiccated coconut (TFS Desicated Coconut 250g) with 1 teaspoon of cumin seeds and 4 black peppercorns into a coarse paste. Add to the Rasam during simmering. The coconut adds a subtle creaminess and body — the Mysore version is richer than the standard Tamil Nadu version.
• Dal Rasam (Heartier — With Lentils): Cook 50g of toor dal (Natco Toor Dal Plain 2kg) until soft, mash, and add to the Rasam base. The lentils add protein and body, transforming Rasam from a light broth into a more substantial soup. This is the version most commonly served as a standalone lunch with rice.
• Tomato Rasam (No Tamarind — Beginner-Friendly): Skip the tamarind entirely and use 3 tomatoes instead of 2 — the extra tomato provides enough acidity on its own. Tomato Rasam is milder, sweeter, and easier for palates that aren't accustomed to tamarind's sour intensity. A good starting point for Rasam newcomers.

Shop This Recipe at Pick N Save

Every single ingredient for this recipe is available at picknsave.co.uk with home delivery across London and the UK, or click and collect from our store in Harrow. Here's your shopping list:

• Rasam Powder (Shortcut): TFS Rasam Powder 100g
• Tamarind: Fudco Tamarind Slabs 200g | TFS Tamarind 200g | Heera Tamarind 200g
• Black Pepper (Coarsely Crush): TFS Black Pepper Whole 100g | Fudco Black Pepper Whole 100g
• Individual Spices (If Building from Scratch): TFS Dhana Coriander Powder 100g | TFS Jeera Powder 100g | TFS Red Chilli Powder 100g | TFS Haldi Powder Rajapuri 100g
• Tempering: TFS Mustard Seeds Large 100g | Fresh Curry Leaves | Ramdev Hing 100g
• Fresh Produce: Fresh Vine Tomato 500g | Fresh Garlic Medium | Fresh Coriander Bunch 1Pc
• Ghee or Oil: KTC Butter Ghee 500g | KTC Pure Sunflower Oil 5 Litres
• Rice: Tilda Basmati Rice 5kg | Tilda Basmati Rice 2kg
• For Mysore Variation: TFS Desicated Coconut 250g
• For Dal Rasam: Natco Toor Dal Plain 2kg | Fudco Toor Dal Malawi Oily 1.5kg
• Accompaniments: Lijjat Plain Papad 200g | Patak Mango Pickle 283g | Desi Natural Yogurt 1kg (for curd rice)