Authentic Davao Imbaw Soup (Clam Shell Soup)
Imbaw is a cherished clear soup from Davao, Philippines, featuring fresh mangrove clams gently simmered with aromatic lemongrass, ginger, tomatoes, and spring onions. This light yet flavorful broth showcases the natural sweetness of the clams while embodying the coastal traditions of Mindanao cuisine. Historically valued for its lactation-supporting properties, this simple yet elegant dish represents the intersection of nourishment and cultural heritage in Filipino cooking.
Equipment
- Large pot (kaldero) For cooking the soup
- Strainer [Salaan] For cleaning the clams
- Sharp knife (kutsilyo) For cutting vegetables
- Cutting board (Sangkalan) For preparation
- Measuring cups (panukat) For accurate measurements
- Ladle - sandok For serving
- Wooden spoon (sandok na kahoy) For gentle stirring
- Large bowl (Mangkok) For soaking clams
Ingredients
- 1 kg Imbaw or large clams thoroughly cleaned
- 5 cups water Tubig
- 2 ripe tomatoes Kamatis, halved
- 1 spring onion Dahon ng Sibuyas, sliced
- 2 stalks lemongrass Tanglad, tied and knotted
- 1 medium onion Sibuyas, chopped
- 1 thumb-sized ginger Luya, peeled and julienned
- Sea salt Asin to taste
Instructions
- First, soak your clams in salted water for 30 minutes to remove any sand, then scrub the shells clean and rinse well under running water. While the clams are soaking, cut your tomatoes into halves, slice the spring onions thinly, bruise and tie the lemongrass into knots, chop the onions finely, and cut the peeled ginger into thin strips.
- Pour 5 cups of water into a large pot and bring it to a full boil over high heat. Once boiling, add your tomatoes, ginger, onion, spring onions, and knotted lemongrass. Cover the pot and let everything simmer over medium heat for 3 minutes – this step infuses the water with all the aromatic flavors.
- Remove the lid and gently add your cleaned clams to the pot. Season with sea salt to taste. Reduce the heat to low and let the soup simmer for just 1-2 minutes, until the clam shells open up. Watch carefully as overcooked clams can become tough. Remember to discard any clams that don't open during cooking.
- That's it – your Imbaw soup is ready to serve hot in bowls. You can add some fresh spring onions on top and serve with calamansi or lemon wedges on the side. Best enjoyed with steaming white rice and, if you like some heat, fresh bird's eye chilies.
- Note: You'll know the soup is perfect when the broth is clear, not cloudy, and has a delicate seafood aroma with hints of ginger and lemongrass.
Tips from Lola's Kitchen
- Choose clams that are tightly closed and feel heavy for their size
- If a clam doesn't open during cooking, discard it
- Don't overcook the clams as they can become tough
- The broth should be clear, not cloudy
- Add chili leaves (dahon ng sili) for extra Filipino flavor
- Use minimal stirring to keep the broth clear
Traditional Serving Suggestions
- Serve hot in individual bowls
- Pair with steamed white rice (Kanin)
- Serve with calamansi or lemon on the side
- Add bird's eye chilies (siling labuyo) for heat
- Garnish with additional spring onions
- Best enjoyed with sawsawan (dipping sauce) of fish sauce and calamansi
Troubleshooting
- Cloudy Broth: Avoid stirring too much and ensure clams are well-cleaned
- Tough Clams: Reduce cooking time; remove from heat as soon as shells open
- Sandy Soup: Soak clams longer in salted water before cooking
- Bland Taste: Add more ginger and ensure proper salt seasoning
- Too Salty: Add more water or tomatoes to balance
Ingredient Alternatives
- Imbaw → Manila clams, littleneck clams, or mussels
- Lemongrass → Lemon zest or kaffir lime leaves
- Spring onions → Leeks or chives
- Fresh tomatoes → Canned diced tomatoes
- Regular onion → Shallots or red onions
Storage & Reheating
- Storage: Keep in airtight container
- Refrigeration: Up to 2 days
- Freezing: Not recommended
- Reheating: Gentle simmer until hot, don't boil
- Best Practice: Consume immediately for optimal taste
Variations
- Spicy Imbaw: Add bird's eye chilies or chili flakes
- Gingery Imbaw: Double the ginger amount
- Coconut Imbaw: Add coconut milk for richness
- Herb-Enhanced: Add Filipino herbs like local basil
- Vegetable-Rich: Add kangkong or pechay
FAQs
Is Imbaw safe during pregnancy?
Yes, when properly cooked. Ensure clams are fresh and thoroughly cleaned.How do I know if Imbaw is fresh?
Fresh Imbaw shells should be closed or close when tapped. They should smell fresh like the sea, not fishy.Can I make this in advance?
Best served immediately. Quality decreases when stored.How do I clean Imbaw properly?
Soak in salted water for 30 minutes, scrub shells if needed, rinse thoroughly under running water.Can I freeze leftover Imbaw soup?
Not recommended as the texture of clams changes when frozen.What makes the soup cloudy?
Excessive stirring or inadequately cleaned clams can make the soup cloudy.Is this recipe keto-friendly?
Yes, it's naturally low in carbohydrates and suitable for keto diets.Can I add other seafood?
Yes, shrimp or fish can be added, but adjust cooking times accordingly.
Nutrition
Calories: 185kcalCarbohydrates: 12gProtein: 28gFat: 3gSaturated Fat: 0.02gPolyunsaturated Fat: 0.1gMonounsaturated Fat: 0.02gSodium: 12mgPotassium: 154mgFiber: 2gSugar: 2gVitamin A: 542IUVitamin C: 15mgCalcium: 14mgIron: 14mg
Tried this recipe?Let us know how it was!