Filipino Sinigang: Authentic Pork Sour Tamarind Soup

If there is one dish that every Filipino household has its own version of — one pot that smells like home, tastes like Sunday afternoons, and makes you reach for a second bowl before you've finished your first — it's sinigang. This iconic sour soup is the heart of Filipino cooking: bold, brothy, and unapologetically tangy, built on a base of tamarind that wakes up every single taste bud. Sinigang na baboy, or pork sinigang, is the most beloved variation, featuring fall-off-the-bone pork ribs simmered low and slow with tomatoes, onions, and a vibrant mix of vegetables. The result is a deeply savory, pleasantly sour broth that you'll want to drink straight from the bowl.

What makes sinigang truly special is how the sourness isn't sharp or harsh — it's bright and layered, softened by the natural sweetness of tomatoes and the earthiness of long beans, eggplant, and kangkong (water spinach). It's a dish rooted in the Philippines' rich tropical landscape, where souring agents like tamarind, calamansi, kamias (bilimbi), and unripe guava grow in abundance. In this recipe, we'll use fresh tamarind for the most authentic depth of flavor, with a note on how to use tamarind paste or a sinigang mix packet when you need a weeknight shortcut. Get your soup pot ready — this is Filipino soul food at its absolute finest.

What Is Sinigang?

Sinigang is a Filipino sour soup or stew traditionally flavored with a souring agent — most commonly tamarind (sampalok). The dish dates back centuries and is considered one of the national dishes of the Philippines, recognized internationally when it was named the "Best Soup in the World" by Taste Atlas in 2021. Beyond pork, sinigang can be made with shrimp, milkfish (bangus), beef, or even just vegetables, but sinigang na baboy holds a special place at every Filipino table. It's typically served over a heaping mound of steamed white rice, the broth soaking in and making every grain extraordinary.

Ingredients

For the Soup

For the Tamarind Sour Base

• 6 oz (170g) fresh tamarind pods (about 8–10 pods) OR 3 tablespoons tamarind paste OR 1 packet (40g) sinigang sa sampalok mix
• 1½ cups water (for cooking tamarind, if using fresh)

Vegetables

Instructions

1. Prepare the tamarind base: If using fresh tamarind pods, shell them and place the pulp in a small saucepan with 1½ cups of water. Bring to a boil, then simmer over medium heat for 10–12 minutes, mashing the pulp as it softens. Strain through a fine-mesh sieve, pressing firmly to extract all the juice. Discard the seeds and fibrous bits. Set the tamarind liquid aside. If using tamarind paste, dissolve it in ½ cup of warm water and set aside. If using sinigang mix, set aside to add later.
2. Blanch the pork: Place the pork pieces in a large pot and cover with cold water. Bring to a boil over high heat and cook for 3–4 minutes. Drain completely and rinse the pork under cold running water. This step removes impurities and ensures a clear, clean-tasting broth — don't skip it!
3. Start the broth: Return the blanched pork to the clean pot. Pour in 8 cups of fresh water. Add the quartered onions and tomatoes. Bring to a boil over high heat, then reduce to a steady simmer. Skim off any foam that rises to the surface during the first 5 minutes.
4. Simmer low and slow: Cover the pot and cook over medium-low heat for 45 minutes to 1 hour, or until the pork is fork-tender and the meat is beginning to pull away from the bone. The tomatoes will have fully dissolved into the broth, giving it a beautiful, light golden color.
5. Add the souring agent: Pour in the prepared tamarind liquid (or dissolved tamarind paste, or sinigang mix). Stir well. Season with fish sauce and salt. Taste the broth — it should be noticeably sour, savory, and rounded. Adjust with more tamarind for extra sourness or more fish sauce for depth.
6. Cook the hardy vegetables: Add the daikon radish (if using) and bring the broth back to a gentle boil. Cook for 5 minutes. Add the eggplant and long beans. Simmer for another 4–5 minutes until the vegetables are just tender but still hold their shape and color.
7. Finish with leafy greens and chilis: Add the whole green finger chilis and kangkong (or spinach). Stir gently and cook for just 1–2 minutes until the greens are wilted and vibrant. Do not overcook — the greens should be bright green and slightly firm. Turn off the heat immediately.
8. Taste and serve: Do a final taste check — sinigang should be boldly sour with a savory backbone. Adjust seasoning one last time. Ladle generously into deep bowls and serve immediately alongside steamed white rice, with extra fish sauce on the side for dipping the pork.

Pro Tips for the Best Sinigang

• Always blanch your pork first. This single step is the difference between a murky, gamey broth and a pristine, clean-tasting one. It takes 5 minutes and is 100% worth it.
• Fresh tamarind gives the most complex, rounded sourness. Tamarind paste is an excellent second choice. The sinigang mix packet (Knorr is the most popular brand) is a perfectly valid shortcut that millions of Filipino families use daily — no shame in it!
• Layer your vegetables by cooking time. Add firm vegetables (daikon, eggplant, long beans) early, and delicate greens (kangkong, spinach) at the very end. Overcooked greens turn gray and lose all their appeal.
• Pork ribs give you the richest broth, but pork belly adds luscious fat ribbons throughout the soup. For the ultimate version, use a combination of both.
• Don't be afraid to go sour. A timid sinigang is a sad sinigang. The sourness should be upfront and proud — that's the whole point of the dish. Taste as you go and trust your palate.
• Serve with a small dish of fish sauce mixed with a few slices of fresh bird's eye chili on the side. Filipinos dip the pork into this mixture — it's an essential finishing touch.

Storage & Make-Ahead Notes

Sinigang stores beautifully and many cooks will tell you it tastes even better the next day, once the flavors have had time to meld. Store leftovers in an airtight container in the refrigerator for up to 3–4 days. Reheat gently on the stovetop over medium-low heat — avoid boiling hard, as this can turn the vegetables mushy. If you're making sinigang ahead for a gathering, cook the pork and broth fully (through step 5) and refrigerate. Add and cook the vegetables fresh just before serving, which takes only 10 minutes and ensures they're perfectly vibrant. For freezing, store only the broth and pork (without vegetables) in a freezer-safe container for up to 2 months. Thaw overnight in the refrigerator and add fresh vegetables when reheating.