Onion Rasam Recipe – Viral South Indian Tangy Soup (Easy & Flavorful)

 Onion Rasam Recipe – Viral South Indian Tangy Soup (Easy & Flavorful)

Try the viral Onion Rasam recipe everyone’s talking about! A tangy South Indian soup made with onions, tomatoes, tamarind, and spices. Simple to cook, comforting to sip, and perfect for rainy days or light dinners.

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Ingredients (for ~2 servings)

• 2 medium onions (thinly sliced)

• 1 large tomato (chopped)

• 1 green chilli (slit)

• 1 tsp mustard seeds

• 1 tsp cumin seeds

• ½ tsp turmeric powder

• 1 tsp red chilli powder (adjust to taste)

• 1 tbsp tamarind pulp (or 1 small lemon’s juice)

• 4 cups water

• A few curry leaves

• 1 tbsp oil or ghee

• Salt to taste

• Fresh coriander for garnish

🍲 Method

1. Heat oil/ghee in a pan, add mustard seeds; when they pop, add cumin seeds + curry leaves.

2. Add sliced onions + green chilli; sauté till onions become translucent.

3. Then add chopped tomato; cook for 2-3 minutes till it softens.

4. Sprinkle turmeric + red chilli powder, stir well.

5. Add tamarind pulp (or lemon juice) + salt + water. Bring to a boil.

6. Simmer for about 5 minutes so flavours meld. Taste and adjust salt/spice/tamarind.

7. Garnish with fresh coriander. Serve hot.

✅ Why it’s trending

• It uses a common ingredient (onion) in a fresh way, which appeals to social-media food lovers. 

• Easy to make, minimal steps, big flavour – perfect for viral reels.

• Versatile & comforting — works as soup or light meal.

💡 Tips & Variations

• For richer flavour: add a splash of coconut milk in the end for a creamy twist.

• For extra spice: add a pinch of garam masala just before serving.

• To make it vegan: use oil instead of ghee.

• Serve with steamed rice or a piece of crusty bread to enjoy it as a full meal.