Can I make the broth ahead of time?
Yes, the broth can be made a day in advance and stored in the refrigerator. Reheat gently before serving.
BREAKFAST
Authentic Vietnamese Fermented Fish Noodle Soup (Bún Mắm)
Experience the bold and savory flavors of the Mekong Delta with this traditional Bún Mắm recipe. This Vietnamese fermented fish noodle soup, celebrated for its complex broth and fresh seafood, offers a truly authentic taste of Vietnam, perfect for a hearty and satisfying meal.
HOW TO MAKE IT
Let's cook.
01
Prepare the fish: Pat the fish fillets dry with paper towels. Season lightly with salt and pepper.
02
Cook the fish: Heat 1 tablespoon of cooking oil in a large pot over medium-high heat. Add the fish pieces and sear for 2 minutes per side until lightly browned. Remove the fish and set aside.
03
Prepare the broth: In the same pot, add 4 cups of fish broth and bring to a simmer. Stir in 1/4 cup of fermented fish paste, 1 tablespoon of sugar, and 1 tablespoon of fish sauce. Simmer for 10 minutes over medium heat, stirring occasionally, to allow the flavors to meld. Strain the broth through a fine-mesh sieve to remove any solids from the fish paste, then return the clear broth to the pot.
04
Cook the noodles: While the broth simmers, cook 8 ounces of vermicelli rice noodles according to package directions until al dente. Drain and rinse with cold water to prevent sticking.
05
Assemble the soup: Gently add the seared fish back into the simmering broth and cook for 3-5 minutes over medium-low heat, until the fish is cooked through. Do not overcook.
06
Serve: Divide the cooked noodles among 4 serving bowls. Ladle the hot broth and fish over the noodles. Garnish with 1/2 cup of fresh bean sprouts and 1/4 cup of chopped fresh herbs. Serve immediately.
About This Recipe
Experience the bold and savory flavors of the Mekong Delta with this traditional Bún Mắm recipe. This Vietnamese fermented fish noodle soup, celebrated for its complex broth and fresh seafood, offers a truly authentic taste of Vietnam, perfect for a hearty and satisfying meal.
Simple ingredients.
Big flavor.✦
Big flavor.✦
Chef's Tips
For an extra layer of flavor, you can add a stalk of lemongrass (bruised) to the broth while it simmers. Adjust the amount of fermented fish paste to your preference; start with less if you're new to the flavor. A squeeze of lime juice at the end brightens the soup.
Easy Substitutions
If firm white fish is unavailable, shrimp or squid can be used. For a vegetarian version, use vegetable broth and firm tofu, omitting the fish paste or using a vegetarian mushroom-based umami paste. If fermented fish paste is too strong, use a smaller amount or substitute with shrimp paste (mắm ruốc) for a milder flavor.
Storage & Reheating
Store leftover broth and fish separately in airtight containers in the refrigerator for up to 2 days. Cooked noodles should be stored separately and are best consumed fresh. Reheat broth gently on the stovetop.
Serving Suggestions
Serve with a side of fresh lime wedges, thinly sliced chilies, and additional fresh herbs for a customizable experience. A small dish of chili garlic sauce can also be offered for those who enjoy extra heat. Fried shallots or pork cracklings are traditional toppings that add texture and flavor.
Common Mistakes
Overcooking the fish: Fish can become tough and dry if cooked too long. Add it towards the end of the broth simmering time. Not straining the broth: Fermented fish paste can have solids; straining ensures a smooth broth. Using too much fermented fish paste initially: Start with a smaller amount and adjust to taste, as its flavor is very potent. Not rinsing noodles: This can make them sticky and clump together in the bowl.
Frequently Asked Questions
What kind of fish is best for Bún Mắm?
Firm white fish like cod, basa, or catfish are commonly used as they hold their shape well in the soup.
Is fermented fish paste very spicy?
No, fermented fish paste is primarily savory and pungent, not spicy. Any spiciness in Bún Mắm usually comes from added chilies.
MORE TO KNOW
Bún Mắm is a staple of Southern Vietnamese cuisine, particularly from the Mekong Delta. Its distinctive aroma and rich, umami-packed broth come from the fermented fish paste, which is a cornerstone of many Vietnamese dishes. The balance of sweet, salty, and savory, combined with fresh herbs and tender fish, creates a truly unique and satisfying meal. Don't be intimidated by the fermented fish paste; it's the secret to the soup's authentic depth of flavor.
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