Sinigang (Filipino Sour Soup)

Method

1. Bring the pork ribs and water to a boil in a large pot. Skim the scum that rises to the surface — this produces a cleaner, clearer broth. Add the tomatoes and onion. Reduce to a simmer and cook for 25-30 minutes until the pork is tender. The tomatoes break down and add a subtle sweetness and body to the broth.

2. Add the tamarind paste and stir to dissolve. Taste the broth — it should be noticeably sour with a savory pork backbone. Adjust with more tamarind if needed. The sourness should be the dominant flavor, with the pork providing richness and the tomatoes adding depth.

3. Add the daikon radish and cook for 5 minutes until starting to soften. Daikon takes the longest to cook and absorbs the sour broth beautifully, becoming translucent and tender. It's one of the best parts of the soup.

4. Add the eggplant, green beans, and green chilies. Cook for 5 more minutes. The eggplant should be soft and silky, the green beans tender-crisp. The chilies add a gentle heat that complements the sourness without overpowering it.

5. Add the kangkong (water spinach) in the last minute of cooking. It wilts almost instantly and should be bright green and just tender. Season with fish sauce and salt. The fish sauce adds a savory depth that rounds out the sour broth.

6. Serve in large bowls with steamed white rice on the side. The traditional way to eat sinigang is to spoon the sour broth over your rice, then eat the pork and vegetables alongside. The rice absorbs the tangy broth and balances the aggressive sourness. Sinigang is the dish that every Filipino misses most when they're away from home.

Equipment

• Large pot or Dutch oven Recommended: Lodge 6-Quart Enameled Cast Iron Dutch Oven
• Ladle Recommended: OXO Good Grips Stainless Steel Ladle
• Fine-mesh strainer (if using fresh tamarind) Recommended: Winco 8-Inch Stainless Steel Fine Mesh Strainer

Chef Notes

• The most important thing: The sourness is the star. Sinigang should be aggressively sour — more sour than you think is right. The rice tempers the acidity when you eat them together. If it doesn't make you pucker slightly, add more tamarind.
• Fresh tamarind pods produce the best flavor — boil them, strain, and use the liquid. Tamarind paste is a good shortcut. Sinigang mix packets work in a pinch but taste more processed.
• Add the vegetables in stages based on cooking time: hard vegetables (daikon) first, then medium (eggplant, green beans), then delicate greens (kangkong) last. Everything should be tender but not mushy.
• Pork spare ribs give the broth body and richness. The fat renders into the soup, creating a satisfying richness that balances the sourness.
• Sinigang is comfort food — every Filipino family has their own version. Some use shrimp, some use fish, some add taro for thickness. This pork version is the most classic.

Common Substitutions

Ingredient	Substitution	Notes
Shrimp	Scallops or firm tofu	Scallops: sear 2 min/side. Tofu: press, cube, pan-fry until golden.
White rice	Jasmine rice or basmati rice	Jasmine is stickier. Basmati is fluffier with longer grains.
Fish sauce	Soy sauce + pinch of sugar	Loses the fermented depth but adds salt and umami.
Dutch oven	Heavy-bottomed pot with tight lid	Any heavy pot works — the tight lid is essential.

What You're Practicing

Sinigang teaches you about using sourness as the primary flavor driver in a dish — a concept that's central to Filipino and Southeast Asian cooking but less common in Western cuisines. Understanding how tamarind's complex sourness (fruity, tangy, slightly sweet) differs from vinegar or citrus gives you a new tool for building flavor. See Techniques for more on acid as a primary seasoning.

The staged addition of vegetables — hard vegetables first, delicate greens last — is a fundamental technique for any soup or stew. It ensures every component is perfectly cooked rather than uniformly overcooked. This same principle applies to minestrone, ratatouille, and any multi-vegetable preparation. See Stocks for more on building layered soups.