Kitchen Swaps

Best Fish Sauce Substitutes

Compare fish sauce substitutes with exact ratios for Thai curry, stir-fry, pad thai, pho, kimchi, marinades, dipping sauces, vegan cooking, and soy-free swaps.

Best default: Soy sauce + lime juice (2 tsp soy + 1 tsp lime = 1 tbsp fish sauce)

Best for: replacing salt, umami, brightness, and fermented depth in curries, noodles, broths, ferments, marinades, and table sauces.

Watch for: straight soy sauce tasting flat; most fish sauce swaps need acidity, a little sweetness, or deeper umami to taste complete.

How to choose the right substitute

Do not replace fish sauce with straight soy sauce

Soy sauce covers salt and some umami, but it misses the acidic lift and fermented seafood depth that fish sauce brings. Soy sauce plus lime is a better quick substitute than soy alone.

Adjust in stages

Fish sauce is concentrated. Add 70-80% of the replacement, cook or stir, then correct with acid, sugar, water, miso, or anchovy depth.

Quick picks

Soy sauce + lime
Starting ratio: 2 tsp soy + 1 tsp lime = 1 tbsp fish sauce
Best for: Fast cooked sauces, stir-fries, and curry bases
Anchovy paste + water + soy
Starting ratio: 1/2 tsp anchovy paste + 2 tsp soy + 1 tsp water
Best for: Closest savory depth when seafood is acceptable
Tamari + rice vinegar
Starting ratio: 2 tsp tamari + 1 tsp rice vinegar
Best for: Gluten-free savory sauces when tamari is certified

Compare the strongest options

Option	Fit	Why choose it	Starting ratio
Soy sauce + lime	Best	Easy pantry balance of salt and brightness.	2 tsp soy + 1 tsp lime per tbsp fish sauce
Anchovy paste blend	Best	Closest fish-forward savory depth for cooked dishes.	1/2 tsp anchovy paste + soy + water
Seaweed broth + soy	Good	Vegan umami with less fermented punch.	2 tsp broth + 1 tsp soy per tbsp

Common mistakes and fixes

Replacing fish sauce with straight soy sauce
Fix: Add acid and a small sweet note so the dish does not taste flat.
Adding the full amount before tasting
Fix: Start with half, then adjust salt and acidity gradually.
Using sweet swaps in dipping sauces without balance
Fix: Add lime or rice vinegar to sharpen the finish.

Pick the cooking goal that matches your recipe

Common questions

What is the closest fish sauce substitute?: Soy sauce plus lime juice is the easiest all-purpose place to start for cooked dishes.
What works best in curry instead of fish sauce?: Anchovy paste with soy and water is usually closer than soy sauce alone when you need cooked umami depth.