Purple gravy is most commonly made using purple yam (ratalu), which gives the dish its vibrant color and earthy flavor. The gravy is typically prepared with onions, tomatoes, garlic, ginger, and Indian spices, resulting in a tangy, mildly spicy curry.
🥘 Purple Yam Gravy Recipe (Ratalu Gravy)
Ingredients
- Purple yam (ratalu) – 250–300 g (peeled and cubed)
- Onions – 2 medium (chopped or made into paste)
- Tomatoes – 2 medium (chopped or pureed)
- Garlic – 4–5 cloves
- Ginger – 1-inch piece
- Green chilies – 2 (optional, adjust spice level)
- Oil – 2 tbsp
- Mustard seeds – ½ tsp
- Cumin seeds – ½ tsp
- Asafoetida (hing) – ¼ tsp
- Turmeric powder – ½ tsp
- Red chili powder – 1 tsp
- Coriander powder – 1 tbsp
- Garam masala – ½ tsp
- Salt – to taste
- Water – 1 cup (adjust for consistency)
Cooking Instructions
- Prep the yam: Peel and cube purple yam. Wash thoroughly.
- Make gravy paste: Blend onions, tomatoes, garlic, ginger, and green chilies into a smooth paste.
- Tempering: Heat oil in a pan. Add mustard seeds, cumin seeds, and asafoetida. Let them crackle.
- Cook the paste: Add the onion-tomato paste. Cook until oil separates.
- Add spices: Mix in turmeric, red chili powder, coriander powder, and salt. Stir well.
- Add yam: Toss in the purple yam cubes. Mix thoroughly with the masala.
- Simmer: Add water, cover, and cook until yam is soft (about 10–15 minutes).
- Finish: Sprinkle garam masala before serving.
🍽 Serving Suggestions
- Best paired with steamed rice, chapati, or paratha.
- Garnish with fresh coriander leaves for added freshness.
- Can be served as a side dish with dal and roti for a complete Indian meal.
🌟 Tips & Variations
- For a creamier gravy, add 2 tbsp of yogurt or coconut milk after the yam is cooked.
To enhance the purple color, avoid overcooking the yam; anthocyanins (natural pigments) fade with prolonged heat.
A Gujarati-style variation includes jaggery for a sweet-spicy balance.

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