Thai Fish Sauce

Traditional Thai condiment made by slowly fermenting small fish in sea salt, then pressing and filtering an amber liquid that is salty, deeply umami-rich, and highly aromatic.

Ingredients

  • 1000 g whole fresh anchovies or small fresh marine fish
  • 300 g non-iodized coarse sea salt

Method

  1. Choose very fresh fish with a clean sea smell and no ammonia note. Rinse them briefly in cold water only if they carry sand, then drain them for a long time until they are no longer dripping.
  2. Mix the fish with coarse salt in a perfectly clean large container. Massage gently to distribute the salt everywhere without turning the fish into a purée: they should remain recognizable but well coated.
  3. Pack the mixture into an earthenware jar, thick glass, or food-grade plastic. Press firmly to expel air pockets: the surface should become moist and briny.
  4. Place a clean weight on the surface so the fish remain compressed in their brine. Close with a non-airtight lid or a clean cloth held tightly in place: gas must escape, but insects and dust must not enter.
  5. Leave to ferment in a warm, stable, bright place away from harsh direct sun. Over the months, the mixture gradually liquefies, darkens, turns amber-brown, and develops a powerful but clean, salty, marine aroma, never a rotten one.
  6. During the first weeks, check regularly that the surface stays moist and salty. If any solid portion protrudes, push it back under the brine with a boiled and cooled utensil. A dry film or colored mold indicates poor immersion: discard it generously and keep only what remains clean, salty, and free of rotten odor.
  7. When the liquid is clear, dark amber, and intensely aromatic, slowly press the mass through very clean cheesecloth. Do not grind aggressively: gentle pressure produces a clearer, less muddy sauce.
  8. Let the filtered liquid settle in a tall jar. When the fine particles have fallen to the bottom, gently decant the clear portion without disturbing the sediment.
  9. Filter one final time through tightly woven cheesecloth or a very fine filter. The sauce should be fluid, glossy, golden brown to amber, with clear salinity and a pronounced umami finish.
  10. Bottle in sterilized, dry containers. Seal, keep away from excessive heat, then use in small amounts as seasoning in soups, stir-fries, dipping sauces, and Thai salads.

Nutrition

Per serving

Energy
203.1 kcal
Protein
31 g
Carbohydrate
0 g
Fat
7.44 g
Fibre
0 g
Calcium
3.62 mg
Magnesium
10.06 mg
Indicative, non-medical nutrition estimate; values depend on brands, actual weights, and whether ingredients are raw or cooked.