Vietnamese Seafood Pho (Pho Hai San): A Classic Soup Reinvented
A fragrant, vibrant South Vietnamese noodle soup layered with seafood, fresh herbs, and aromatic spices—this is pho hai san reimagined for your kitchen.
Vietnamese Seafood Pho (Pho Hai San)
Seafood pho, or pho hai san, is a radiant adaptation of Vietnam’s beloved noodle soup, blending the perfume of pho’s classic spices with fresh ocean flavors and crisp garden greens. While traditional pho features beef or chicken, this version uses a vibrant seafood stock complemented by a medley of shrimp, fish, and a flourish of herbs for an aromatic, light yet deeply satisfying bowl.
What Is Pho Hai San?
Pho hai san is a Vietnamese noodle soup served in a fragrant clear broth, loaded with seafood such as shrimp and fish. Unlike the more common beef or chicken pho, seafood pho delivers a lighter, naturally sweet broth, enriched by the gentle brininess of fish and shellfish, and is completed tableside with a cascade of fresh herbs, chili, lime, and sprouts.
Ingredients
The beauty of seafood pho is in both its fragrant broth—infused with aromatics, spices, and seafood—and its elegant toppings. Use the freshest ingredients for the best results.
Broth Base
- 2-inch chunk fresh ginger (unpeeled)
- 1 large yellow onion (unpeeled)
- 3 ounces sweet apple (peeled, cored, in chunks)
- 2 medium celery stalks (chopped)
- 1 large carrot (unpeeled, thick rounds)
- 1 pound napa cabbage leaves (cut in pieces)
- 2 whole star anise
- 1-inch cinnamon stick
- 1 ½ tsp fennel seeds
- 1 tsp coriander seeds
- 9 cups water
- 1 cup clam juice (bottled)
- 1 ½ tsp fine sea salt
- 3 tbsp dried shrimp
- 10 oz large shrimp (shells on)
- 1 ½ – 2 tbsp fish sauce
- 1 tsp organic sugar (or 2 tsp maple syrup; optional)
Noodle Bowls & Seafood
- 10 oz dried flat rice noodles (or 1 lb fresh pho noodles)
- Cooked shrimp (from above)
- 10 oz firm white fish fillet (such as snapper, sea bass, tilapia, rockfish, salmon)
- ½ small yellow or red onion (thinly sliced, soaked in water)
- 2 scallions (green onions, thinly sliced)
- Fresh cilantro (chopped)
- Julienned fresh ginger
Garnishes & Accompaniments
- Bean sprouts
- Fresh Thai basil
- Lime wedges
- Chili slices or Sriracha
- Hoisin sauce (optional)
Step-by-Step Instructions
1. Prepare the Aromatics and Broth
Start by charring the ginger and onion over an open flame or under a broiler until slightly blackened—about 5-7 minutes, turning occasionally. This deepens the flavor and aroma of the broth.
In a large pot, combine charred onion and ginger with apple, celery, carrot, cabbage, star anise, cinnamon stick, fennel seeds, and coriander seeds. Add water and bring to a gentle boil. Once boiling, reduce the heat and simmer for 40-60 minutes. Skim off any foam that rises for a clear broth.
2. Infuse with Seafood Essence
After the vegetables and spices have simmered for 40 minutes, add clam juice, sea salt, dried shrimp, and whole shrimp (with shells). Simmer for an additional 20 minutes to allow the seafood to flavor the broth gently without becoming overpowering.
When the shrimp are just opaque and cooked through—about 2-3 minutes—remove them immediately, plunge them into cold water, then peel and slice them (halve or butterfly if jumbo). Set aside for assembling the bowls.
3. Season and Strain
Remove all solids from the broth (use a fine mesh sieve for a pristine, clear soup). Taste and adjust seasoning with fish sauce, salt, and sugar if using—aim for a delicate, savory-sweet balance with gentle spice.
4. Prepare the Noodles
If using dried rice noodles, soak them in warm water for 30 minutes, then cook in boiling water for 30-60 seconds until tender (or al dente), then drain. For fresh noodles, simply blanch until just soft, about 10-20 seconds. Divide noodles among serving bowls.
5. Assemble the Bowls
- Arrange cooked, peeled shrimp and raw thinly sliced fish fillets on the noodles.
- Top with soaked raw onion slices, scallions, cilantro, and julienned ginger.
Just before serving, bring broth to a rolling boil. Ladle steaming broth directly over the assembled noodles and seafood—this will gently poach the fish and warm the shrimp.
6. Serve with Traditional Garnishes
- Offer Thai basil, bean sprouts, lime wedges, and fresh chilies on the side.
- Allow diners to customize each bowl with squeezed lime and extra herbs.
- Sriracha and hoisin sauce may be provided for dipping or swirling into the broth.
Expert Tips for Perfect Seafood Pho
- Careful seafood handling: Only simmer seafood briefly in the broth to prevent overcooking and toughness.
- Ginger for zing: Skip pepper; use fresh ginger to impart signature pho heat while harmonizing with seafood.
- Clear broth secrets: Skim frequently and strain well. Charred aromatics add depth without muddying the clear look.
- Balance umami: Bottled clam juice and fish sauce provide depth without fishiness.
- Customizable protein: Swap in calamari, scallops, or firm-fleshed fish as preferred.
- Vegetarian option: For a meatless broth, omit seafood and use more dried mushrooms and kombu for savory notes.
Serving Suggestions & Pairings
Vietnamese seafood pho is typically served in generous bowls, meant to be a satisfying meal in itself. For a more festive spread, pair with:
- Spring rolls (fresh or fried)
- Pickled vegetables
- Vietnamese iced coffee or chilled jasmine tea
For added texture, a side of crisp prawn crackers complements the soup’s silkiness.
Common Mistakes & How to Avoid Them
- Broth too fishy: Use dried shrimp and bottled clam juice sparingly; supplement with more vegetables or apple for sweetness.
- Overcooked seafood: Remove seafood as soon as it’s cooked in the broth, and add back to the bowls just before serving hot broth.
- Muddied broth: Skim off impurities, avoid aggressive boiling, and strain through fine mesh.
- Bland flavor: Adjust with a splash more fish sauce, squeeze of lime, or extra ginger.
Nutrition Highlights
Vietnamese seafood pho is light in calories but rich in protein, vitamins, minerals, and anti-inflammatory compounds (from ginger and spices). The use of fresh vegetables and herbs increases its nutritional profile, making it suitable for a balanced, healthy meal.
| Component | Nutrition Highlight |
|---|---|
| Shrimp | High in protein, low in fat, source of selenium and B12 |
| Fish | Omega-3 fatty acids, protein, vitamin D |
| Broth (vegetables, aromatics) | Minerals, antioxidants, low calories |
| Rice Noodles | Gluten-free, energy-providing carbohydrates |
| Fresh Herbs | Vitamins A, C, K, and anti-inflammatory agents |
Variations & Substitutions
- Mix up the seafood: Try adding scallops, squid, or mussels for additional flavors and textures.
- Broth alternatives: Use a clear chicken or even dashi broth as a base if clam juice is unavailable.
- Spicy twist: Add fresh chili directly to the broth or offer chile oil as a condiment.
- Gluten-free assurance: Ensure fish sauce and noodles are certified gluten-free if necessary.
- Low-sodium adaptation: Adjust salt, use low-sodium broths or sauces, and increase the citrus and herb content to enhance flavor naturally.
Frequently Asked Questions (FAQs)
Q: Is seafood pho authentic Vietnamese cuisine?
A: While beef and chicken pho are most traditional, seafood pho has roots in southern Vietnam and is a popular regional variant, especially in coastal cities.
Q: How do I know when seafood is cooked in pho?
A: Shrimp turn pink and opaque, while fish becomes opaque and flakes easily. They should be just-cooked, not rubbery—remove from broth as soon as done.
Q: Can I make seafood pho ahead of time?
A: Yes. Prepare the broth and keep seafood and noodles separate until just before serving. Reheat broth, assemble bowls, and pour boiling broth over seafood to cook it fresh to order.
Q: What fish is best for pho hai san?
A: Use firm white fish such as snapper, cod, sea bass, tilapia, or even salmon. Avoid oily or strong-smelling varieties for the cleanest broth.
Q: Are there options for those allergic to shellfish?
A: Omit shrimp and use only firm fish or try tofu for protein. Adjust broth and taste as needed for balance.
Storage & Reheating
- Broth: Keeps refrigerated up to 3 days or frozen for up to 1 month. Reheat to boiling before serving.
- Seafood: Best eaten fresh. If you must store, keep separate, and add to boiling broth when serving.
- Noodles: Cooked noodles can be stored separately; reheat by blanching quickly in hot water to restore texture.
Final Tips for the Best Seafood Pho
- Freshness is key: Use the freshest seafood and herbs you can find for brightness and snap.
- Layer flavors: Build your broth slowly, with attention to spice, aromatics, and seafood for the richest, cleanest flavor.
- Table-side customization: Lay out all garnishes and sauces so diners can build a bowl suited to their unique tastes.
