Sri Lankan Onion Salad Recipe (Lunu Salad)

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What is Sri Lankan Onion Salad Recipe (Lunu Salad)?

Sri Lankan Onion Salad Recipe (Lunu Salad) is a simple yet flavorful side dish made with thinly sliced onions, fresh green chilies, tomatoes, lime juice, and aromatic herbs. Known for its crisp texture and refreshing taste, this salad adds a tangy and mildly spicy kick to a wide variety of Sri Lankan meals.

Often served alongside biryani, fried rice, grilled meats, barbecues, curries, and rice dishes, Onion Salad helps balance rich and spicy flavors. It is quick to prepare, requires no cooking, and can be customized with additional vegetables and herbs to suit your taste.

Preparation Time: 15 minutes
Cooking Time: None
Total Time: 15 minutes
Servings: 4

Ingredients – Sri Lankan Onion Salad Recipe (Lunu Salad)

Main Ingredients

  • 2 large red onions, thinly sliced
  • 1 medium tomato, finely chopped
  • 2 green chilies, thinly sliced
  • 2 tablespoons fresh coriander leaves, chopped
  • 1 tablespoon fresh mint leaves, finely chopped (optional)
  • Juice of 1 lime
  • ½ teaspoon black pepper
  • ½ teaspoon roasted cumin powder (optional)
  • Salt to taste

Optional Ingredients

  • 1 small cucumber, thinly sliced
  • 1 small carrot, grated
  • 1 teaspoon chili flakes
  • 1 teaspoon olive oil or coconut oil
  • A pinch of sugar (to balance the acidity)

Garnishes

  • Lime wedges
  • Fresh coriander leaves
  • Thin slices of green chili

Step-by-Step Instructions

Step 1 – Prepare the Vegetables

Peel and thinly slice the onions.

Finely chop the tomato.

Slice the green chilies.

Chop the coriander and mint leaves.

Step 2 – Reduce the Sharpness of the Onions (Optional)

Place the sliced onions in a bowl of cold water for 5–10 minutes.

Drain well before using.

This helps reduce their strong flavor while keeping them crisp.

Step 3 – Combine the Ingredients

In a large mixing bowl, add:

  • Sliced onions
  • Chopped tomatoes
  • Green chilies
  • Coriander leaves
  • Mint leaves (if using)

Mix gently.

Step 4 – Prepare the Dressing

In a small bowl, combine:

  • Lime juice
  • Salt
  • Black pepper
  • Roasted cumin powder (optional)
  • Chili flakes (optional)

Whisk until well mixed.

Step 5 – Toss the Salad

Pour the dressing over the vegetables.

Gently toss until everything is evenly coated.

Step 6 – Rest Before Serving

Allow the salad to rest for 5 minutes.

This gives the onions time to absorb the flavors while remaining crisp.

Step 7 – Garnish and Serve

Transfer the salad to a serving bowl.

Garnish with:

  • Fresh coriander leaves
  • Lime wedges
  • Green chili slices

Serve immediately.

Additional Details

Cooking Tips

  • Red onions provide the best flavor and vibrant color.
  • Fresh lime juice gives the salad its signature tangy taste.
  • Soaking the onions briefly in cold water creates a milder flavor without losing their crunch.
  • Prepare the salad just before serving to maintain maximum freshness.
  • Adjust the amount of green chilies according to your preferred spice level.

Popular Variations

  • Cucumber and Onion Salad – Includes sliced cucumber for extra freshness.
  • Tomato Onion Salad – Features extra tomatoes for a juicier salad.
  • Mint Onion Salad – Prepared with generous amounts of fresh mint.
  • Spicy Onion Salad – Includes chili flakes and extra green chilies.
  • Carrot Onion Salad – Mixed with grated carrots for added sweetness and color.

Storage

  • Best enjoyed fresh.
  • Store leftovers in an airtight container in the refrigerator for up to 24 hours.
  • The onions may soften over time as they absorb the dressing.
  • Freezing is not recommended, as it affects the texture and freshness.

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