Cold sauces & condiments
Lunu Miris
ලුණු මිරිස් · Lunu Miris is a foundational no-cook Sri Lankan condiment (a sambol) built from finely chopped or pounded red onion, dried red chili, salt, and lime juice, with Maldive fish as the characteristic umami booster. It is a reusable base component that is mixed fresh and served as an accompaniment to rice-based dishes rather than eaten as a standalone dish.
The formula
1 part chopped onion : 1 part dried red chili flakes; lime juice ~2 tsp, Maldive fish ~1 tbsp, salt to taste
Onion and chili flakes are used in roughly equal volume; chili powder is added on top for color/extra heat; Maldive fish and lime are accent doses rather than bulk ingredients.
Identity
- A cold, uncooked Sri Lankan sambol-style condiment
- Part of the 'sambol' family of Sri Lankan flavor bases (alongside pol sambol, katta sambol)
- Defined by the salty-fiery flavor profile that gives it its name ('lunu' = salt, 'miris' = chili)
- No-cook preparation relying on mechanical breakdown (mortar and pestle) rather than heat
- A reusable base component, not a finished dish — meant to accompany many other preparations
Ingredients
| Aromatics | Red onion, finely chopped (Asian shallots preferred) | Shallots are traditional; red onion is the standard substitute. Provides the pungent allium backbone. |
| Flavor | Dried red chili flakes or crushed red chili pieces | Brings the signature heat and red color; the defining 'miris' element. |
| Flavor | Chili powder | Optional; used for deeper red color and added warmth. Lakpura uses 2 tbsp per 1 onion; srilankacooking uses just 1 tsp. |
| Flavor | Maldive fish (umbalakada), smoked and dried | Optional but characteristic; adds a deep umami/salty backbone. 'Always an option' per Lakpura. |
| Acid | Lime juice | Roughly 2 tsp per large onion; brightens and balances the heat. |
| Seasoning | Salt | Added to taste; ground with the dry spices at the start. |
Method
- 1Grind salt, dried red chili pieces, and chili powder together in a mortar and pestle (wangediya) to a coarse powder.Breaking down the dry spices first releases their essential oils and disperses salt evenly so it seasons the onion uniformly as it releases liquid.
- 2Add Maldive fish to the mortar and pound into small flakes, mixing into the chili-salt base.The fish is brittle when dried; pounding it early keeps it from turning into rubbery chunks and distributes its umami through the dry spice mix.
- 3Add the chopped onion and pound with a circular, pressing motion until it breaks down into a coarse, wet paste.Mechanical pressure ruptures the onion cells, releasing juices that hydrate the spices and bind the sambol without any added liquid.
- 4Transfer to a bowl and stir in the lime juice; mix thoroughly.Adding lime at the end preserves its fresh aroma and prevents the acid from cooking or dulling the raw onion flavor.
- 5Taste and adjust salt; serve immediately or chill briefly.Lunu miris is best fresh, but a short rest lets the flavors meld while the onion still retains its crunch.
Techniques that matter
Mortar and pestle pounding (wangediya)
The traditional tool; the shearing action breaks onion cells and crushes chili without liquefying the mix the way a blender would.
Sequential grinding by ingredient hardness
Dry spices and brittle Maldive fish are pounded first, then the wet onion is added last to avoid a mushy, over-processed texture.
Acid addition at the end
Preserves the brightness of fresh lime and keeps the onion crisp rather than pickled.
Variations & derivatives
Coastal/Lowcountry version with more Maldive fishSouthern and coastal Sri Lanka
Heavier hand with umbalakada for pronounced umami; srilankacooking uses 4 tbsp Maldive fish to 2 onions.
Hotel/restaurant version with extra chili powderCommercial Sri Lankan kitchens
Lakpura's measured version uses 2 tbsp chili powder for vibrant red presentation.
Minimal home versionHousehold kitchens
Just onion, chili flakes, salt, and lime — Maldive fish and chili powder omitted for speed.
Used in these dishes
Substitutions
- Asian shallots → Red onion (or white onion) — Shallots are milder and sweeter; red onion is the widely accepted substitute. White onion works in a pinch but is sharper.
- Dried red chili flakes → Fresh red chili, finely chopped — Changes texture from sandy to chunky and shifts flavor from smoky-fiery to grassy-fiery.changes result
- Maldive fish → Dried shrimp powder or omitted — Both are dried seafood umami boosters; omitting yields a vegetarian version that still works but loses the signature depth.changes result
- Lime juice → Lemon juice — Lemon is slightly less aromatic but functionally interchangeable.
Troubleshooting
Sambol is watery and thin
Onion was over-pounded or sat too long, releasing excess juice. → Drain off a little liquid, or add a teaspoon of chili powder to absorb moisture and tighten the mix.
Flavor is flat or one-dimensional
Insufficient salt, or Maldive fish omitted without compensating umami. → Adjust salt first; if still flat, crumble in a little more Maldive fish or add a few drops more lime to lift the top notes.
Overpowering raw-onon bite
Onion was chopped too coarsely or not pounded enough to release its sugars. → Pound a minute longer so the cells rupture and the harshness mellows into sweetness.
Color is dull rather than vibrant red
No chili powder used; flakes alone give a speckled look. → Stir in 1–2 tsp chili powder for the signature red hue.