Sinigang Recipe: Filipino Tamarind Pork Soup

Sinigang is a Filipino sour soup, often made with pork, tamarind, and vegetables simmered in a light, savory broth. This version balances the tart tamarind with tender pork and vegetables added in stages, so the broth stays bright and the greens do not turn mushy; ingredients and souring agents vary by region and household.

Ingredients

2 lb (900 g) bone-in pork shoulder, cut into 2-inch (5 cm) pieces; ask the butcher to cut it if needed
10 cups (2.4 L) water, divided
3 oz (85 g) seedless tamarind pulp from a block
1 medium yellow onion, about 6 oz (170 g), quartered
2 medium tomatoes, about 10 oz (280 g), cut into wedges
2 tablespoons (30 ml) fish sauce, plus more to taste
1 teaspoon (5 g) fine salt, plus more to taste
1 teaspoon (2 g) whole black peppercorns
1 medium daikon radish, about 12 oz (340 g), peeled and cut into ½-inch (1 cm) half-moons
1 medium Japanese 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 small bunch water spinach (kangkong), about 8 oz (225 g), leaves and tender stems separated and cut into 3-inch (7.5 cm) lengths
2 green finger chiles, whole or slit, optional
1 tablespoon (15 ml) fresh lime juice, optional, for final adjustment if needed

Instructions

Prepare the tamarind. Put the tamarind pulp in a heatproof bowl and pour over 2 cups (475 ml) of the measured hot water. Let it soften for 10 minutes, then press and stir it with a spoon until the water is cloudy and the pulp has released its flavor. Strain through a fine sieve into a bowl, pressing the pulp gently; discard the fibers and seeds. If using seedless paste rather than a block, dissolve it in the same amount of hot water and strain only if it is fibrous.
Start the pork broth. Put the pork, remaining 8 cups (1.9 L) water, onion, tomatoes, fish sauce, salt, and peppercorns in a large heavy pot. Bring to a boil over medium-high heat, skimming off gray foam as it rises. Lower the heat to maintain a gentle simmer. Leave the pot partly covered so steam can escape; a hard boil can make the broth cloudy and cause the pork to cook unevenly.
Simmer until the pork is tender. Cook for 55 to 70 minutes, checking after 50 minutes. Turn the pieces once or twice so they cook evenly, and add a little hot water if the pork becomes exposed. The meat should be tender when pierced but still hold its shape. The thickest pork piece must reach 145°F (63°C), the USDA FSIS safe minimum for whole cuts of pork; turn off the heat and let the soup rest for at least 3 minutes before serving.
Season the broth with tamarind. Stir in the strained tamarind liquid, starting with about three-quarters of it if you prefer a gentler sourness. Simmer for 5 minutes, then taste. Add more tamarind liquid gradually until the broth is pleasantly tart, not sharply sour. Taste again for salt and fish sauce. The broth should be flavorful enough to season the vegetables and rice, but it should not taste as salty as a dipping sauce.
Cook the firm vegetables first. Add the daikon and optional whole or slit chiles. Simmer for 8 minutes, then add the eggplant and green beans. Cook another 5 to 7 minutes, until the daikon is tender when pierced and the beans are cooked but still have some bite. Keep the heat at a gentle simmer. If the broth is reducing more than you want, add a splash of hot water and retaste before adding any more salt.
Finish with the greens. Add the water spinach stems and cook for 1 minute, then stir in the leaves and cook just until wilted, about 1 to 2 minutes. Turn off the heat. Taste the soup once more; add fish sauce or salt if it needs savoriness, or a little of the optional lime juice if it needs a final touch of acidity. Let the pot stand for 3 minutes, then serve hot.

Tips

Control the sourness in stages. Tamarind blocks and pastes differ in strength, so do not pour in all the strained liquid before tasting. It is easy to add more, but difficult to correct a broth that has become too tart. If it is too sour, add hot water a little at a time and adjust the fish sauce and salt to restore flavor.
Use a practical tamarind substitute. If a block of tamarind is hard to find, use one 40 g packet of sinigang soup mix, adding it gradually according to its package directions and tasting before adding salt or fish sauce. The mix is convenient and often includes salt and seasoning, so the broth may taste more seasoned and less purely tart than one made from pulp. Tamarind concentrate also works; start with a small amount because products vary considerably.
Keep the simmer gentle. A quiet simmer helps pork shoulder soften without breaking the vegetables apart. Skim the surface during the first part of cooking for a clearer-looking broth, and avoid stirring vigorously once the eggplant and greens are in the pot.
Choose pork with enough connective tissue. Bone-in shoulder gives the broth body and becomes tender with a longer simmer. Lean pork loin cooks faster and can dry out if simmered for an hour; if using it, cut it into larger pieces, add it later, and check for doneness rather than waiting for it to behave like shoulder.

Serving Suggestions

Serve sinigang in deep bowls with plenty of broth, pork, and vegetables in each portion. Steamed white rice is the classic partner: serve it on the side or spoon the soup over it just before eating. A small dish of fish sauce with sliced chile lets diners add saltiness and heat at the table without changing the seasoning of the whole pot.

For a fuller meal, offer extra rice and a simple side such as sliced cucumber or a plate of fresh tomato and onion. The soup is satisfying on its own, but rice is especially useful because it softens the sharp edge of the tamarind broth. If serving a group, keep the pot covered between ladles so the greens stay warm and do not dry out.

Variations

Use another souring ingredient. Guava, green mango, kamias (bilimbi), and calamansi are used in different Filipino sour soups and household versions. They do not taste identical to tamarind: green mango tends to be fruity, while calamansi can give a citrusy edge. Add an unfamiliar souring ingredient gradually and taste as you go.

Swap the protein. Beef short ribs or brisket can replace the pork, but they usually need a longer simmer; cook them until tender before adding the vegetables. For a seafood version, use firm fish or shrimp and add it near the end so it does not overcook. Fish should reach 145°F (63°C), the USDA FSIS safe minimum, measured in the thickest part. Chicken is another option; pieces must reach 165°F (74°C). Keep seafood or chicken versions separate from this pork timing and adjust the cooking steps accordingly.

Change the vegetables. Taro, radish, okra, bok choy, or leafy mustard greens can stand in for some of the vegetables. Taro needs a longer simmer and can thicken the broth, while delicate greens should go in at the end. If kangkong is unavailable, spinach or watercress is a workable substitute, though it softens faster and has a different flavor.

Make it more or less spicy. Leave the chiles whole for mild flavor, slit them for more heat, or omit them entirely. For a stronger table condiment, serve sliced fresh chile separately rather than making the whole pot hot. Families and regions season sinigang differently, so adjust the sourness, salt, and chile to suit the ingredients and the people eating.

Storage and Reheating

Refrigerate leftovers within 2 hours of cooking, dividing a large pot among shallow containers so it cools more quickly. Store covered in the refrigerator for 3 to 4 days. The pork and broth freeze well for up to 3 months; vegetables, especially water spinach and eggplant, become softer after freezing, so for the best texture freeze the broth and pork separately from any greens you plan to add later.

Reheat only the amount you plan to eat in a saucepan over medium heat, stirring occasionally, until it is steaming throughout and reaches 165°F (74°C), the USDA FSIS temperature for reheated leftovers. Add a splash of water if the broth has reduced or become concentrated. Add fresh greens during reheating and cook just until wilted. Avoid repeatedly warming and cooling the entire pot; portioning helps preserve both quality and safe handling.

Frequently Asked Questions

Can I make sinigang without a sinigang seasoning packet?
Yes. This recipe uses tamarind pulp and seasons the broth with fish sauce, salt, onion, and tomato. The packet is a convenient alternative when tamarind is unavailable, but check its salt level and add extra seasoning only after tasting.

Why is my sinigang not sour enough?
Tamarind varies by product and age, and some blocks release less flavor than others. Simmer in more strained tamarind liquid a little at a time, tasting after each addition. A small amount of lime juice can sharpen the finish, but it will add a citrus note rather than the rounded flavor of tamarind.

Can I make the soup ahead?
Yes. Cook the pork and broth a day ahead, cool and refrigerate them within 2 hours, then reheat to 165°F (74°C). Add the vegetables and greens during reheating so they stay firmer. You can also prepare and strain the tamarind liquid ahead and keep it refrigerated in a covered container.

What cut of pork is best for sinigang?
Bone-in pork shoulder is a dependable choice because its connective tissue softens during a long simmer and the bones contribute flavor. Pork ribs or belly are common alternatives, though belly makes a richer broth. Lean loin is less forgiving and should be added later so it does not become dry.

How can I fix sinigang that is too salty?
Add hot water in small amounts, then taste the broth again. If you have extra unsalted broth, that works too. Adding more vegetables can spread the seasoning across more portions, but do not add extra tamarind or fish sauce until you have checked the balance after diluting it.

Can I use frozen vegetables?
Some frozen vegetables can work, though they may soften more quickly and release extra water. Add them near the end of cooking and simmer only until heated through. Fresh water spinach is preferable for its texture, but frozen spinach can substitute; thaw and drain it first, then stir it in just before serving.

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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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