Sinigang Filipino sour broth

Sinigang is a Filipino soup or stew defined by its sour broth, with the souring agent, not the protein, serving as the dish’s primary identifier. The most common souring agent is sampalok (tamarind), but regional and household variations use kalamansi (calamansi lime), bayabas (guava), libas (a sour fruit from the mango family), batuan (a sour fruit native to the Visayas), or kamias (bilimbi). The sour broth is typically paired with a protein, most often baboy (pork), hipon (shrimp), isda (fish, especially bangus/milkfish), or baka (beef), and a medley of vegetables including kangkong (water spinach), sitaw (long beans), talong (eggplant), labanos (daikon radish), okra, and tomatoes. The dish is traditionally simmered until the vegetables are tender and the broth is deeply sour, then served over steamed rice.

Sinigang is distinct from Thai tom yum (which uses lemongrass, galangal, and kaffir lime for a layered sour-spicy profile) and Vietnamese canh chua (which incorporates pineapple, bean sprouts, and herbs like rice paddy herb). While all three are sour broths, sinigang relies on a single dominant souring agent and does not typically include coconut milk or fermented fish sauce as a base.

The dish has no known Mexican-origin ingredients, as tamarind (Tamarindus indica) is native to tropical Africa and naturalized in Asia, not Mexico. However, the tomato (Solanum lycopersicum), a Mexican-origin ingredient, is commonly added to sinigang for acidity and color. Dietary notes: Sinigang is naturally gluten-free and can be made vegan by omitting the protein and using vegetable broth; it is not inherently halal or kosher unless prepared with halal-slaughtered meat or kosher-certified ingredients. The souring agents themselves are plant-based and allergen-free, though shrimp and fish versions contain shellfish and fish allergens respectively.