Is coconut milk traditional in sinigang?
Classic sinigang is usually clear and sour. Coconut milk is more common in gata-based dishes, but there are plenty of home-cook riffs and regional spins across the Philippines. It works beautifully here as a warm, festive twist. Keep it light so the tamarind still leads.
What can I use if I cannot find tamarind?
Best options are tamarind concentrate, paste, frozen tamarind pulp, or a tamarind soup base packet. If you are truly stuck, you can make a sour soup in the spirit of sinigang with calamansi or lime plus tomatoes and fish sauce, but it will not taste like tamarind. Other traditional souring options (depending on region and availability) include green mango, guava, or kamias (bilimbi).
How do I control the sourness?
Add your souring in stages. Brands vary a lot in strength, especially with concentrates and pastes. Start modest, simmer, taste, then adjust. Also, fish sauce and salt make sour flavors pop, so do your final seasoning after the tamarind is in.
Can I make this with pork or chicken instead of shrimp?
Yes. For pork (like ribs or belly), simmer until tender before adding vegetables. For chicken thighs, simmer 20 to 25 minutes. Add coconut milk near the end in both cases and keep it at a gentle simmer.
How do I keep shrimp from getting rubbery?
Add shrimp at the very end and cook just until pink and curled. Turn off the heat as soon as they are done. Residual heat finishes the job. If you want even more flavor, use shell-on shrimp, then peel before eating.