Filipino Tamarind Soup: Sinigang

Filipino tamarind soup, commonly called sinigang, is a savory, sour broth simmered with pork, vegetables, and tamarind. This home-style version balances the fruit’s tang with tender pork and fresh greens; ingredients and sourness vary by region and household, so you can adjust the broth to taste.

Ingredients

8 oz (225 g) seedless tamarind pulp, fresh or frozen
2 cups (475 ml) water, for extracting the tamarind
2 tbsp (30 ml) neutral cooking oil
1 medium yellow onion, about 7 oz (200 g), peeled and cut into wedges
2 medium ripe tomatoes, about 10 oz (280 g), cut into wedges
2 lb (900 g) bone-in pork shoulder, cut into 1½-inch (4 cm) pieces
10 cups (2.4 L) water, for the soup
2 tbsp (30 ml) fish sauce, plus more to taste
1 tsp (5 g) fine salt, plus more to taste
1 medium daikon radish, about 12 oz (340 g), peeled and cut into ½-inch (1 cm) half-moons
1 medium Asian eggplant, about 8 oz (225 g), cut into 1-inch (2.5 cm) pieces
8 oz (225 g) green beans, trimmed and cut into 2-inch (5 cm) lengths
1 long green chile, such as a finger chile, left whole or slit once (optional)
1 bunch bok choy, about 10 oz (280 g), washed and cut into large pieces, keeping stems and leaves separate
1 cup (30 g) water spinach or baby spinach, loosely packed (optional, if available)
6 cups (about 1.1 kg) cooked rice, for serving

Instructions

Prepare the ingredients. Cut the pork and vegetables before you begin cooking so they can be added at the right times. If the tamarind pulp is frozen, thaw it in the refrigerator or under cool running water. Keep the bok choy leaves separate from the stems; the leaves cook much faster.
Extract the tamarind. Put the pulp and 2 cups (475 ml) water in a small saucepan. Bring to a simmer and cook for 10 minutes, stirring occasionally, until the pulp softens and loosens from the seeds or fibers. Mash it against the side of the pan with a spoon, then pour it through a fine-mesh strainer into a bowl. Press gently to collect the sour liquid, but leave tough seeds and fibers behind. Set the liquid aside.
Build the soup base. Heat the oil in a large, heavy pot over medium heat. Add the onion and tomatoes and cook for 5 minutes, stirring now and then, until the onion begins to soften and the tomatoes release some juice. Add the pork, 10 cups (2.4 L) water, fish sauce, and salt. Bring the pot to a boil, skimming off foam that gathers on top. Lower the heat to maintain a gentle simmer.
Simmer the pork until tender. Partially cover the pot and simmer for 65 minutes, turning the pork once or twice. Keep the broth at a steady, gentle bubble rather than a hard boil; vigorous boiling can make the meat and broth cloudy. Check the pork near the end: it should be tender when pierced, though it should still hold together. USDA FSIS gives 145°F (63°C) with a 3-minute rest as the safe minimum for whole cuts of pork; check the center of a thick piece with a food thermometer. Pork shoulder generally needs more cooking for tenderness, and the pieces can remain in the hot broth for the rest.
Season the broth with tamarind. Stir in about 1 cup (240 ml) of the strained tamarind liquid. Taste carefully, then add more a little at a time until the broth tastes distinctly sour but still savory. The amount you need depends on the pulp and how tangy you like sinigang. Stir in the daikon and whole chile, if using, and simmer for 8 minutes, until the radish is beginning to soften.
Cook the remaining vegetables. Add the eggplant and green beans and simmer for 5 minutes. Add the bok choy stems and cook for 2 minutes, then add the leaves and optional water spinach or spinach. Simmer for 1 to 2 minutes, just until the leaves wilt and the vegetables are tender but not falling apart. Remove the whole chile if you want its flavor without bites of heat.
Finish and serve. Taste the broth and adjust with more fish sauce or salt. If you want a sharper soup, stir in a little more reserved tamarind liquid; if it is too intense, add a splash of hot water. Ladle the pork, vegetables, and broth into bowls and serve hot with cooked rice.

Tips

Adjust for the tamarind you have. Seedless pulp varies in tartness, so add the strained liquid gradually instead of pouring it all in at once. If you can only find a smooth, unsweetened concentrated tamarind paste, use about 2 tablespoons (30 g) to start, thin it with hot water, and add more to taste. Concentrates differ considerably in strength. Avoid sweetened tamarind sauce, which can make the soup taste more like a condiment than a savory broth.
Use a gentle simmer. A rolling boil can break up the pork and vegetables and make the soup cloudy. If the surface is bubbling vigorously, lower the heat. Skimming foam early also helps keep the broth cleaner-tasting.
Time vegetables by how quickly they cook. Daikon needs a head start, while leafy greens need only a minute or two. Cut denser vegetables into similar-sized pieces so they become tender at about the same time. Stop cooking while the vegetables still have some shape; they will soften further in the hot broth.
Keep the rice separate. Store rice apart from the soup rather than mixing it into the pot. Rice left in broth absorbs liquid and can turn soft, while separate storage makes it easier to reheat only the portions you need.

Serving Suggestions

Serve sinigang in deep bowls with plenty of broth, a piece or two of pork, and a mix of vegetables in each portion. Put warm, plain rice on the table, either in individual bowls or in a shared serving bowl. Diners can eat rice alongside the soup or spoon some broth over it as they go. A small dish of fish sauce with sliced fresh chile is a useful optional condiment for anyone who wants extra salt or heat.

The soup is filling enough to serve as a main meal, especially with rice. If you want another dish on the table, choose something simple that does not compete with the sour broth, such as sliced fresh fruit or a mild vegetable side. Keep extra chile and any dipping sauce on the side so the main pot stays balanced for everyone.

Variations

Use a different protein. Bone-in pork ribs work well, though thicker pieces may need more simmering before they become tender. For beef, use a stewing cut and allow extra time; add the vegetables only when the meat is close to tender. Shrimp or firm fish cook much faster, so use a seafood version of the method rather than simmering them for the full pork cooking time. Add seafood near the end and cook it through; USDA FSIS recommends cooking fish to 145°F (63°C), checked with a food thermometer.

Choose another souring ingredient. Fresh or frozen tamarind pulp gives the soup a rounded, fruity tartness. When it is unavailable, an unsweetened tamarind concentrate is the closest practical substitute. Some cooks use calamansi, green mango, guava, or a packaged sinigang seasoning mix; each creates a different kind of sourness and may change the broth’s salt level. If using a seasoning mix, follow its package amount as a starting point and reduce the added salt until you have tasted the soup.

Switch up the vegetables. Taro can be simmered with the pork until tender and adds a soft, starchy texture. Radish, okra, green beans, eggplant, and leafy greens are also common choices, though combinations differ from one version of sinigang to another. If water spinach, sometimes sold as kangkong, is hard to find, use spinach. Spinach wilts more quickly and has a more delicate texture, so add it right at the end.

Make the broth lighter or more substantial. For a less rich soup, trim excess surface fat after simmering or chill the broth and lift off the solidified fat before reheating. For a heartier pot, add extra daikon or a few pieces of taro rather than adding more pork. Adjust the tamarind and fish sauce again after changing the proportions, since extra vegetables can soften the perceived sourness and saltiness.

Storage and Reheating

Let the soup stop steaming heavily, then refrigerate it in covered, shallow containers within 2 hours of cooking. Keep it at 40°F (4°C) or colder and use it within 3 to 4 days. Store rice separately in its own covered container. If the pot is too large to cool promptly, divide the soup among smaller containers instead of leaving it out to reach room temperature.

Reheat only the amount you plan to eat, either in a saucepan over medium heat or in a microwave-safe bowl. Stir occasionally and heat leftovers to 165°F (74°C), checking the center with a food thermometer. Bring the broth to a simmer and make sure the pork and vegetables are hot throughout. Add a splash of water if the broth has concentrated, then taste and adjust the seasoning. The vegetables will be softer after storage, especially leafy greens, but the soup remains suitable for reheating.

For longer storage, freeze the cooled soup in airtight freezer-safe containers, leaving a little room for expansion, for about 2 to 3 months for best quality. Thaw it in the refrigerator and reheat to 165°F (74°C). The pork and broth freeze better than tender greens, which can become limp; if you plan to freeze portions, you can leave out some greens and add freshly cooked greens when serving.

Frequently Asked Questions

What does sinigang taste like?
Sinigang has a savory broth with a clear, bright sourness from tamarind. Pork, fish sauce, and vegetables add depth, while the degree of tartness varies by cook and by the souring ingredient used. It should taste tangy and balanced rather than sweet.

Can I use sinigang seasoning mix instead of tamarind pulp?
Yes. Packaged sinigang mix is a convenient substitute and is widely used for the dish. Because it often contains salt and other seasonings, add it gradually according to the package directions, taste the broth, and hold back on extra salt or fish sauce until the end.

Why is my sinigang not sour enough?
Tamarind pulp can vary in strength, and some liquid may remain in the fibers after straining. Stir in more reserved tamarind extract a little at a time. If you have used all of it, dissolve a small amount of unsweetened tamarind concentrate in hot water and add it gradually, tasting between additions.

Can I make this soup ahead?
Yes. The broth and pork can be cooked ahead and refrigerated for up to 3 to 4 days. For the best vegetable texture, reheat the broth and pork first, then add fresh greens near the end. If all the vegetables are already in the soup, reheat gently because they will soften more with each warming.

Can I make sinigang without fish sauce?
Yes. Leave it out and season with salt, tasting as you go. Fish sauce adds a savory, fermented depth, so the flavor will be simpler without it. A small amount of soy sauce can add savory notes, but it changes the taste and darkens the broth.

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Safety notes: safe minimum internal temperatures from USDA FSIS; raw and undercooked fish guidance from the U.S. FDA. Food safety notes

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