Fish Sauce Substitute (7 Umami Swaps)

There’s nothing quite like the savory depth of fish sauce, is there? It’s a cornerstone in so many of my favorite Southeast Asian dishes, bringing that unmistakable umami punch. But what happens when you reach into the fridge and that distinctive bottle is empty? Or perhaps you’re cooking for someone with an allergy, or simply looking for a plant-based alternative. As a food blogger who has spent years experimenting in my kitchen, I’ve faced this dilemma many times. I’ve tested countless ingredients to find the best swaps that truly deliver on flavor, ensuring your meals never miss that essential savory note.

Don’t worry, a missing bottle of fish sauce won’t derail your dinner plans! I’ve rounded up my seven go-to fish sauce substitutes, each designed to bring a similar depth of flavor to your cooking. From pantry staples to a few creative combinations, these alternatives will ensure your dish still sings with that rich, savory goodness you’re craving.

Top Substitutes for Fish Sauce

1. Soy Sauce or Tamari

Swap ratio: 1:1, or start with 1/2 amount and adjust

Best for: Stir-fries, marinades, dipping sauces, soups

Soy sauce is my most frequent go-to when I’m out of fish sauce. It provides a robust savory base, although it lacks the fermented, slightly sweet undertones of fish sauce. If you’re gluten-free, tamari is an excellent choice, offering a similar depth of flavor. I often add a tiny squeeze of lime juice or a pinch of sugar to round out the flavor profile, especially in dishes where fish sauce is a prominent ingredient. Start with a smaller amount and taste as you go.

Pros:

• Widely available
• Vegan friendly (tamari is often GF)
• Good umami base

Cons:

• Lacks the same depth and funk
• Can be saltier, requires careful seasoning

2. White Miso Paste + Water

Swap ratio: 1 teaspoon white miso paste + 1 teaspoon water for 1 teaspoon fish sauce

Best for: Soups, dressings, glazes, marinades

Miso paste, especially white miso, brings a beautiful fermented depth and savory richness that’s very similar to fish sauce. It’s packed with umami and has a slightly sweet, earthy note. I like to mix it with a little water to thin it out to a similar consistency, which makes it easier to incorporate into liquids. This substitute is fantastic for adding complexity to broths or dressings, and it’s a stellar choice for a vegan option. Just remember it’s quite potent, so start small.

Pros:

• Excellent fermented umami flavor
• Vegan
• Adds body and richness

Cons:

• Needs to be thinned out
• Can be salty, adjust accordingly
• Not always a pantry staple

3. Worcestershire Sauce

Swap ratio: 1:1, or slightly less

Best for: Marinades, stews, robust sauces, Bloody Marys

Yes, Worcestershire sauce! It contains anchovies, tamarind, and vinegar, giving it a complex, savory, and tangy profile that can mimic fish sauce in a pinch. It has a distinctive flavor, so it’s not a perfect match, but it absolutely brings that fermented umami hit. I find it works best in dishes where fish sauce isn’t the star, but rather a background note, like in a hearty stew or a marinade for grilled meats. For vegetarian versions, ensure you use a brand without anchovies.

Pros:

• Contains anchovies for umami
• Good tang and savory notes
• Widely available

Cons:

• Strong, distinct flavor (can overpower)
• Often contains anchovies (not vegan)
• Can be a bit sweet

4. Dried Shiitake Mushroom Liquid

Swap ratio: 1:1, or more concentrated if desired

Best for: Broths, soups, vegan stir-fries, sauces

This is my secret weapon for adding deep, earthy umami to vegan dishes. Rehydrating dried shiitake mushrooms creates a wonderfully savory liquid that has an incredible depth of flavor. Simply soak 3-4 dried shiitake mushrooms in 1 cup of hot water for 20-30 minutes, then strain the liquid. You can use this concentrated broth directly. The mushrooms themselves can be sliced and added to your dish for extra texture and flavor. It’s a fantastic, natural way to boost savory notes.

Pros:

• Deep, earthy umami
• Vegan and gluten-free
• Adds natural richness

Cons:

• Requires planning ahead (rehydration time)
• Flavor is distinct from fish sauce
• May need additional salt

5. Coconut Aminos

Swap ratio: 1:1, or 1.5 times the amount of fish sauce

Best for: Paleo/Whole30 recipes, dressings, light stir-fries, marinades

Coconut aminos are a fantastic soy-free and gluten-free alternative that I often reach for. Made from fermented coconut sap, they offer a mild, slightly sweet, and savory flavor profile. While they are less potent than fish sauce, they still contribute a lovely umami depth without being overpowering. I usually use a bit more coconut aminos than I would fish sauce to achieve a similar flavor impact. It’s a great option for those with allergies or dietary restrictions who still want that savory kick.

Pros:

• Soy-free and gluten-free
• Mild, slightly sweet umami
• Good for specific dietary needs

Cons:

• Less potent than fish sauce (may need more)
• Can be sweeter
• More expensive than other options

6. Seaweed (Kombu) Broth

Swap ratio: 1:1, or more concentrated

Best for: Soups, broths, light dressings, dashi-based dishes

Kombu, a type of edible kelp, is a powerhouse of natural glutamates, which means pure umami. Making a simple kombu broth (dashi) is incredibly easy: just steep a 4-inch piece of kombu in 4 cups of cold water for 30 minutes, then slowly bring to a simmer and remove before boiling. This clear, savory liquid adds a subtle brininess and deep umami without any fishy flavor. It’s perfect for delicate dishes where you want a clean, savory boost without a strong fermented taste.

Pros:

• Pure, clean umami
• Vegan and gluten-free
• Subtle brininess

Cons:

• Lacks fermented depth
• Requires preparation time
• Not always readily available

7. Anchovy Paste

Swap ratio: 1/4 teaspoon anchovy paste + 1 teaspoon water for 1 teaspoon fish sauce

Best for: Sauces, stews, long-cooked dishes, dressings

This might sound counterintuitive if you’re avoiding fish, but anchovy paste provides an incredibly concentrated, salty, and savory umami that is very close to fish sauce. A tiny amount goes a long way. I usually dissolve about 1/4 teaspoon of anchovy paste in 1 teaspoon of water to mimic the liquid consistency. The anchovies completely melt into the dish, leaving no fishy chunks, just a profound savory depth. It’s an excellent choice when you need that specific fermented fish flavor.

Pros:

• Very close flavor profile to fish sauce
• Intense umami boost
• Melts into dishes seamlessly

Cons:

• Contains fish (not vegan/vegetarian)
• Very salty, use sparingly
• Can be too strong if overused

When to Use the Real Thing

While these substitutes are fantastic in a pinch, there are times when fish sauce is simply irreplaceable. If you’re making a classic Thai green curry, a traditional Vietnamese pho, or a Cambodian prahok ktiss, the unique, complex funk and savory depth of authentic fish sauce is absolutely essential. These dishes rely on its specific flavor profile to achieve their signature taste. If fish sauce is listed as a primary ingredient, or if you’re cooking a dish where its distinct character is meant to shine, I highly recommend sourcing a good quality bottle. Sometimes, the original is just worth it for that truly authentic experience.

Common Mistakes to Avoid

• Using too much: Substitutes can be saltier or more concentrated, so always start with half the amount and taste.
• Forgetting to balance flavors: Fish sauce offers umami, salt, and a hint of sweetness. You might need to add a pinch of sugar or a squeeze of lime to your substitute.
• Not considering texture: Some substitutes are thicker (miso paste) or require rehydration (mushrooms), so adjust liquids accordingly.

Frequently Asked Questions

What is the best vegan fish sauce substitute?

For a truly excellent vegan option, I highly recommend a blend of white miso paste thinned with water, or the rehydrated liquid from dried shiitake mushrooms. Both offer a deep, savory umami that stands in beautifully for fish sauce without any animal products.

Can I use soy sauce instead of fish sauce?

Absolutely! Soy sauce is a very common and effective substitute. While it provides a great savory base, it lacks the fermented funk of fish sauce. I often add a tiny bit of rice vinegar or lime juice to soy sauce to give it a little more complexity when I’m making this swap.

How do I make a gluten-free fish sauce substitute?

Tamari is your best bet for a gluten-free soy sauce alternative, offering similar umami. Coconut aminos are another excellent choice, being both soy-free and gluten-free. Additionally, the liquid from rehydrated dried shiitake mushrooms or kombu broth are naturally gluten-free and pack a powerful umami punch.

Will my dish taste different with a fish sauce substitute?

Yes, it will taste slightly different, as no substitute can perfectly replicate the unique complexity of fish sauce. However, a good substitute will still provide that essential savory, umami depth, ensuring your dish is delicious and balanced. The goal is to capture the spirit of the flavor, not an exact clone.

Can I use anchovy paste for fish sauce?

Yes, a very small amount of anchovy paste can be a surprisingly effective substitute. It’s packed with concentrated umami and fermented fish flavor, much like fish sauce. I recommend dissolving about 1/4 teaspoon of paste in 1 teaspoon of water to achieve a similar consistency and then adding it cautiously, tasting as you go.

What if I need a substitute for a dipping sauce?

For dipping sauces, you’ll want something with good liquid consistency and balanced flavor. A mix of soy sauce or tamari with a splash of lime juice and a tiny pinch of sugar works wonderfully. White miso paste thinned with water can also create a rich, savory dipping base, especially when combined with a little rice vinegar.