Anchovy Fish Sauce Recipe: Bold Umami Depth for Southeast Asian Dishes

This homemade fish sauce captures the deep, salty-sweet complexity that defines Southeast Asian cooking. The anchovies ferment slowly, transforming into a rich, amber liquid packed with umami.

With just two ingredients and patience, you’ll create a bold condiment that elevates stir-fries, marinades, and dipping sauces. The result is far superior to store-bought versions.

Ingredients for Anchovy Fish Sauce

Seven ingredients transform into complex umami depth for your Southeast Asian dishes.

The anchovies are non-negotiable here. Wild-caught from the Mediterranean yield the cleanest flavor—avoid those packed in oil. Whole Foods and Asian markets often carry high-quality options. Coarse sea salt (like Maldon or Diamond Crystal) dissolves better than fine table salt. If using canned anchovies, drain and rinse thoroughly to remove excess sodium.

No anchovies? This recipe won’t work—it’s the foundation. For a quicker version, Red Boat or Three Crabs fish sauce can substitute in cooking (but won’t have the same depth). Brown sugar can be coconut sugar or palm sugar for a different profile. Skip the garlic if you prefer a cleaner flavor. The vinegar can be apple cider vinegar in a pinch.

Store the finished sauce in a glass jar in a cool, dark place. It’ll keep for 1-2 years at room temperature. The flavor deepens with age—6 months is ideal. Refrigerate after opening for extended shelf life.

Step-by-Step Instructions for Anchovy Fish Sauce

This fermentation process transforms simple ingredients into complex umami liquid gold over time.

Step 1: Prepare the Anchovy Fillets and Brine

Rinse the 1 lb anchovy fillets thoroughly under cold water to remove any residual blood or impurities. Pat them completely dry with paper towels—excess moisture will dilute your brine and affect fermentation. I use a clean kitchen towel for the final pat-down to ensure they’re bone-dry.

In a large bowl, dissolve the 0.5 cup sea salt in the 4 cups filtered water until fully incorporated. The salt should disappear completely, creating a clear brine. This concentration is crucial—too little salt risks spoilage, while too much inhibits fermentation. Stir in the 2 tbsp brown sugar and 1 tbsp rice vinegar until dissolved.

Step 2: Layer Ingredients for Fermentation

Place the dried anchovy fillets in a clean, wide-mouth glass jar or ceramic crock. I use a 1-quart mason jar for this quantity. Add the 4 cloves garlic cloves (lightly crushed with the side of a knife) if using—they’ll infuse subtle allium notes into the sauce.

Pour the prepared brine over the anchovies until they’re completely submerged by at least 1 inch. The fillets should be fully covered at all times during fermentation; this prevents mold growth on exposed surfaces. If needed, add a small weight (like a fermentation weight or a smaller jar filled with water) to keep them under the liquid.

Step 3: Ferment in a Dark, Cool Place

Cover the jar loosely with a lid or clean cloth secured with a rubber band. This allows airflow while keeping out debris and insects. Store in a dark, cool place (ideally 65-70°F) for 6-12 months. I recommend a pantry or basement shelf away from direct sunlight.

Check the jar weekly for the first month, skimming off any foam or mold that may form on the surface. This is normal during active fermentation. After the first month, monthly checks are sufficient. The liquid will gradually turn from clear to a rich amber color as the anchovies break down and release their umami compounds.

Step 4: Strain and Adjust the Sauce

Once the fermentation period is complete—the sauce should have a deep, complex aroma with no harsh fishiness—strain the liquid through a fine-mesh sieve lined with cheesecloth. Press the solids gently to extract all the liquid, but don’t squeeze so hard that you force bits of anchovy through the cloth.

Taste the strained sauce and adjust the seasoning if needed. I find that 1 tbsp lime juice brightens the flavor beautifully, balancing the saltiness with a touch of acidity. If the sauce is too intense, dilute with a small amount of water, but remember that this is a concentrated condiment meant to be used sparingly.

Transfer to clean bottles and store in a cool, dark place. The sauce will continue to develop complexity for another 6 months in storage.

Creative Variations of This anchovy fish sauce

Thai-Inspired Variation

Add 1 stalk lemongrass (bruised and cut into 2-inch pieces) and 3 kaffir lime leaves to the fermentation jar. These bright citrus notes complement the anchovy’s depth beautifully. I also toss in 1 tsp coriander seeds for earthy complexity. 🌿

Vietnamese Style

For a sweeter profile, increase the brown sugar to ¼ cup and add 1 small pineapple chunk to the brine. The natural enzymes help break down the anchovies faster. This version matures in about 8-10 months instead of the full year.

Spicy Korean Twist

Incorporate 2 dried shiitake mushrooms and 1 tbsp gochugaru (Korean chili flakes) to the jar before pouring the brine. The mushrooms add meaty depth while the chili provides a gentle heat. Remove the mushrooms after 3 months to prevent bitterness. 🔥

Quick 3-Month Version

Use ½ lb anchovies with ¼ cup salt and 2 cups water for a smaller batch. Add 1 tbsp fish sauce (like Red Boat) to jumpstart fermentation. This produces a lighter sauce in just 3 months, perfect for impatient cooks.

Citrus-Forward Variation

Include 2 strips orange zest and 1 strip lime zest in the jar. The citrus oils infuse beautifully during fermentation. I find this version pairs exceptionally well with seafood dishes and summer rolls.

Frequently Asked Questions