Best Substitutes for Fish Sauce
Fish sauce is fermented anchovy brine that adds umami, salt, and a specific funk to Southeast Asian dishes. Standard Vietnamese fish sauce contains 20-25% salt by weight. The flavor hits three notes: oceanic brine, aged cheese-like funk, and deep savory umami.
Substituting fish sauce means matching both the saltiness and the fermented depth. Plain salt covers one part but misses the complexity. Soy sauce gets closer but lacks the oceanic quality. The best substitutes combine ingredients to mimic both aspects.
Fish sauce's thin consistency matters too. It distributes evenly through stir-fries and dressings where thick pastes would clump. Any substitute needs similar viscosity or proper dilution.
Best Overall Substitute
Soy sauce at a 1:1 ratio. It matches the salt level (16-18% sodium vs fish sauce's 20-25%) and adds umami depth. The flavor profile shifts from oceanic to grain-based, but it works in 90% of recipes without other adjustments.
All Substitutes
Soy sauce
1:1 by volumeSoy sauce contains 16-18% sodium compared to fish sauce's 20-25%, so the salt level stays close. Both are fermented liquids with umami compounds. Soy lacks the oceanic funk but adds its own fermented wheat and soybean depth. Dark soy sauce works better than light because it has more complex flavors from longer aging. Add a pinch of salt if your dish tastes flat.
Anchovy paste
1/2 teaspoon paste per 1 teaspoon fish sauceAnchovy paste is concentrated fish sauce without the liquid. Mix 1/2 teaspoon paste with 1/2 teaspoon water to match fish sauce consistency. The flavor is more intense and less funky since it's not fermented as long. Salt content runs 15-20%, so taste before adding more salt. The paste dissolves better in hot liquids than cold.
Tamari
1:1 by volumeTamari is gluten-free soy sauce with slightly thicker consistency and 18% sodium content. It tastes less sharp than regular soy sauce because it's 100% soybeans without wheat. The umami is cleaner and more pronounced. Works identically to soy sauce in cooking but gives a rounder flavor.
Soy sauce + rice vinegar
3/4 teaspoon soy + 1/4 teaspoon vinegar per 1 teaspoon fish sauceRice vinegar adds the sharp tang that soy sauce lacks. Fish sauce has natural acidity from fermentation (pH 5.5-6.0). This combo brings similar brightness. Use unseasoned rice vinegar to control salt levels. The mixture works immediately without aging.
Worcestershire sauce
1:1 by volumeWorcestershire contains anchovies, vinegar, and fermented ingredients. The flavor profile includes umami, tang, and slight sweetness. Salt content is lower (3-4% vs 20-25%), so add 1/4 teaspoon salt per tablespoon used. The consistency matches fish sauce perfectly. Some brands are thicker, so check yours.
Miso paste + water
1/2 teaspoon miso mixed with 1/2 teaspoon water per 1 teaspoon fish sauceWhite miso has 12% salt content and fermented umami. Mix with equal parts warm water to thin. The flavor is earthier and less sharp than fish sauce. Red miso works but tastes stronger. The paste needs thorough mixing or it leaves lumps. Whisk in a small bowl first.
Liquid aminos
1:1 by volumeLiquid aminos taste like mild soy sauce with 16% sodium content. They're unfermented, so they lack depth but add clean umami. The consistency matches fish sauce exactly. Coconut aminos work too but contain only 10% sodium, so double the amount or add salt.
Mushroom soy sauce
1:1 by volumeMushroom soy contains 15% sodium plus concentrated shiitake extract. The mushrooms add earthy umami that partially mimics fish sauce's depth. Color is darker, which affects light-colored dishes. The viscosity is slightly thicker. Available at Asian markets.
Seaweed broth + salt
1 tablespoon kombu broth + 1/4 teaspoon salt per 1 tablespoon fish sauceSteep 2 inches dried kombu in 1 cup hot water for 20 minutes. The broth contains glutamates for umami plus oceanic flavor. Add salt to reach 20% salinity. Make ahead and refrigerate up to 1 week. The flavor is cleaner than fish sauce but captures the sea essence.
How to Adjust Your Recipe
Fish sauce adds liquid to recipes, so dry substitutes need compensation. Add 1 teaspoon water per teaspoon of paste or powder used. Thick substitutes like miso need thinning to incorporate properly.
Salt levels vary wildly between substitutes. Soy sauce comes closest at 16-18% sodium. Worcestershire has only 3-4%. Always taste and adjust. Start with 3/4 the amount called for, then add more.
Fish sauce develops flavor during cooking. Add substitutes at the same stage. Early addition allows flavors to meld. Late addition keeps them distinct. The timing matters most in long-simmered dishes.
When Not to Substitute
Traditional Vietnamese and Thai recipes often depend on fish sauce's specific funk. Pho broth, green papaya salad, and authentic pad thai lose their character with substitutes. The fermented anchovy flavor is irreplaceable in these dishes.
Nuoc cham (Vietnamese dipping sauce) needs actual fish sauce. The balance of fish sauce, lime, sugar, and chili doesn't work with substitutes. Same goes for Thai nam prik sauces.
Fermented fish products like shrimp paste or fish paste aren't interchangeable with fish sauce. They're much stronger and thicker. Using them 1:1 ruins dishes.
Frequently Asked Questions
Is there a vegetarian substitute that actually tastes like fish sauce?
No perfect match exists, but combining 2 tablespoons soy sauce, 1 tablespoon rice vinegar, 1 teaspoon sugar, and 1 sheet nori (blended) per 1/4 cup creates complexity. The nori adds oceanic flavor while vinegar provides tang. This mixture needs 24 hours to meld flavors. Store refrigerated up to 2 weeks. The taste is 70% accurate, missing only the fermented fish funk.
Can I skip fish sauce entirely in recipes?
Skipping works in dishes with multiple umami sources like mushrooms, tomatoes, or cheese. Add 1/4 teaspoon salt per tablespoon of fish sauce omitted. The dish loses depth but remains edible. Stir-fries and soups suffer most from omission. Marinades and dressings handle it better if you boost other seasonings by 25%.
How do I substitute fish sauce in raw preparations like larb or spring rolls?
Raw dishes need the cleanest substitutes since cooking doesn't meld flavors. Use 3/4 teaspoon light soy sauce plus 1/4 teaspoon lime juice per teaspoon fish sauce. The acidity mimics fermentation tang. Liquid aminos work at 1:1 but taste milder. For spring roll dipping sauce, thin tamarind paste (1/2 teaspoon) with soy sauce (1/2 teaspoon) captures more authentic flavor. Temperature matters: room temperature substitutes incorporate better than cold ones.