Fish Sauce Instead of Anchovy Paste: How to Use It Well

Fish sauce can stand in for anchovy paste in dressings, sauces, soups, and braises: start with an equal amount, then taste and adjust. It brings a similar salty, savory depth, but it is thinner and can taste sharper, so add it gradually and account for the extra liquid and salt in the recipe.

Ingredients

1 teaspoon (5 ml) fish sauce for every 1 teaspoon (about 5 g) anchovy paste called for
1 teaspoon (5 ml) water or other liquid from the recipe, optional, if you want to mellow a particularly assertive fish sauce
1 teaspoon (5 ml) olive oil, optional, only when the recipe depends on the anchovy paste’s small amount of oil or paste-like body

Instructions

Check the recipe’s role for the anchovy paste. If it is being stirred into a dressing, tomato sauce, soup, marinade, or braising liquid for savory flavor, use fish sauce directly. If it is meant to spread onto food or contribute noticeable oil and texture, plan to compensate for the difference; fish sauce will not behave like a thick paste.
Measure an equal amount to start. Replace 1 teaspoon (about 5 g) anchovy paste with 1 teaspoon (5 ml) fish sauce. For 1 tablespoon (about 15 g) anchovy paste, begin with 1 tablespoon (15 ml) fish sauce. This is a practical starting ratio, not a claim that every brand or recipe has identical saltiness.
Add it where it can disperse evenly. Whisk fish sauce into the wet ingredients of a dressing or marinade. For a hot sauce or soup, stir it into the liquid and let the mixture simmer as the recipe directs. In a recipe that starts by cooking anchovy paste in oil, add the fish sauce with another liquid rather than frying it in the pan; it is watery and can sputter when poured into hot oil.
Adjust the seasoning and consistency. Taste before adding any extra salt, soy sauce, or salty cheese. If the fish sauce tastes too forceful, add a little water or unsalted broth from the recipe and taste again. If the finished mixture seems too loose, reduce it according to the original recipe or balance it with a suitable thickener already used in that dish.
Finish the recipe as written. Fish sauce can provide savoriness without needing to dissolve or mash, but it does not add the same body as paste. Follow the recipe’s normal cooking time and add delicate ingredients when directed. Do not add extra fish sauce simply to imitate the visible amount of anchovy paste; judge by flavor.

Tips

Use the equal-volume ratio as a starting point. Fish sauce is a workable one-for-one replacement in many mixed dishes, but brands differ in saltiness and intensity. For a large batch, add about three-quarters of the amount first, taste, then add more in small splashes. This is especially useful in a vinaigrette or a sauce that will be reduced.
Hold back other salt until the end. Anchovy paste is salty too, but a liquid fish sauce may distribute through a dish differently and can make each bite taste more seasoned. Reduce added salt at first, not necessarily by a fixed amount, then adjust once the dish has cooked. Also check whether the recipe includes capers, olives, Parmesan, stock cubes, or soy sauce.
Do not expect a paste-like texture. A teaspoon of fish sauce adds liquid, not a mound of thick, oily seasoning. Usually that small amount is easy to accommodate in a dressing or simmered sauce. For a dry rub, topping, or filling where moisture matters, use a different substitute such as finely minced anchovy fillet, or choose a savory alternative that suits the dish.
Choose a mild hand with dishes that are not cooked. In a salad dressing or dip, the fish sauce’s aroma remains more noticeable than it may in a long-simmered sauce. Mix it with the other ingredients, let the flavors settle for a minute, and taste before adding more. The goal is a rounded savory note, not a sauce that tastes plainly of fish sauce.

Serving Suggestions

This substitution is most useful in recipes where anchovy paste is a background seasoning rather than the main ingredient. Try it in Caesar-style dressing, where it can add salty savoriness alongside lemon, garlic, and cheese; in a tomato sauce, where it can deepen the overall flavor; or in a soup, stew, or braise that already has enough liquid to absorb a small splash. It also works in a marinade or a pan sauce, provided the recipe has a way to balance its saltiness.

For dressings and dips, whisk the fish sauce into the acid and other liquids before slowly mixing in oil. Taste with the food it will accompany, not just from a spoon: a dressing can seem strong by itself but balanced on lettuce, while a dip served with salty crackers may need less seasoning. For a simmered dish, taste near the end, after the liquid has reduced. Evaporation concentrates salt, so an early taste may not predict the final seasoning.

Variations

For a gentler flavor: Use three-quarters of the fish sauce amount first, then make up the difference only if the dish needs more savory depth. You can also dilute the measured fish sauce with a little water or unsalted broth, but do this only when the recipe can accommodate the added liquid. Dilution softens the impact; it does not make the replacement taste exactly like anchovy paste.

For a thicker mixture: If a recipe needs an anchovy-flavored paste to coat a spoon or cling to another ingredient, fish sauce alone is not a close texture match. Finely mash a small anchovy fillet with a little of the recipe’s oil, if anchovies are suitable, or use a small amount of miso for body and savoriness. Miso changes the flavor and may contain different levels of salt, so start with less and taste. For a vegetarian or vegan dish, choose a plant-based savory seasoning rather than fish sauce.

For recipes calling for anchovy fillets: Fish sauce can season the dish, but it cannot provide pieces of fish or the soft texture of melted fillets. Use it only if the fillets are there for seasoning rather than texture, and begin with a modest amount because recipes vary in how many fillets they call for. If visible anchovy is part of the intended result, use fillets instead of a liquid substitute.

Storage and Reheating

There is no need to prepare a large batch of the substitution in advance: measure the fish sauce into the dish when you are cooking. Keep the fish sauce bottle closed and store it according to its label; refrigerate after opening if the label directs you to do so. If you have mixed fish sauce with water, broth, oil, or other perishable ingredients, refrigerate that mixture promptly and use it within 3 to 4 days, or sooner if its ingredients or recipe call for a shorter period.

For a cooked dish made with the substitution, refrigerate leftovers within 2 hours in a covered, shallow container and use them within 3 to 4 days. Reheat only the portion you plan to eat, stirring so it warms evenly; leftovers should reach 165°F (74°C). A dressing or other uncooked mixture is usually served cold or at room temperature rather than reheated. Do not leave a fish-sauce-containing dish sitting at room temperature for an extended period.

Frequently Asked Questions

What is the ratio of fish sauce to anchovy paste?
Start with 1 teaspoon (5 ml) fish sauce for each 1 teaspoon (about 5 g) anchovy paste. In a larger recipe, use the same volume as a starting point, then taste before adding more. The precise amount depends on the saltiness of the fish sauce and the other strongly seasoned ingredients in the dish.

Will the finished dish taste fishy?
Used in a modest amount, fish sauce generally contributes a salty, savory background note rather than making a whole dish taste strongly of fish. Its aroma can be more apparent in uncooked dressings or dips than in a simmered sauce. Start with less in a cold preparation, mix thoroughly, and add more only after tasting.

Should I reduce the salt in the recipe?
It is sensible to hold back some added salt until the dish is nearly finished, but there is no universal reduction that works for every recipe. Fish sauce, anchovy paste, stock, cheese, olives, and other ingredients all vary in saltiness. Taste after cooking or mixing, then season in small increments.

Can I use fish sauce instead of anchovy paste in Caesar dressing?
Yes. Add a small measured amount to the dressing’s liquid ingredients and whisk it in well. Begin with the equal-volume substitution, or use less if the dressing also contains salty Parmesan, Worcestershire sauce, or other briny ingredients. Taste it with a lettuce leaf before serving and adjust the lemon, oil, or seasoning as needed.

Can I fry fish sauce like anchovy paste?
Not in the same way. Anchovy paste can be stirred into oil and cooked briefly, while fish sauce is liquid and may sputter if added directly to hot oil. Add fish sauce to the recipe’s wet ingredients or after another liquid has entered the pan, then follow the recipe’s simmering directions.

What if I need a vegetarian substitute?
Fish sauce is made from fish, so it is not vegetarian or vegan. Use a plant-based alternative such as a small amount of soy sauce, tamari, or miso, depending on the recipe. These options have their own flavors and salt levels; begin with less than the anchovy paste amount and adjust gradually.

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Safety notes: safe minimum internal temperatures from USDA FSIS; raw and undercooked fish guidance from the U.S. FDA. Food safety notes

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