Chef Tips
Add fish sauce gradually and taste as you go
Fish sauce brands vary considerably in salinity and intensity. Start with 2 tablespoons, taste, then add more in small increments. You’re looking for a sauce that is clearly salty but not overwhelming, with the sweet, sour and spicy notes all coming through alongside it. If you go too far with the fish sauce, a little extra lime juice and palm sugar can bring it back.
Make it ahead and let it sit
Nuoc cham tastes noticeably better after it’s had 15 to 30 minutes to sit. The garlic and chilli infuse into the liquid and the palm sugar fully dissolves and integrates. If you make it and serve it immediately it can taste slightly sharp. Make it while you’re prepping everything else and it’ll be ready by the time you sit down. It keeps getting better over the first day in the fridge.
Storage
Store in an airtight jar in the fridge for up to 2 weeks. The garlic will mellow over time and the flavours continue to develop. Stir before serving as the palm sugar can settle at the bottom. The sauce can also be frozen in small portions for up to 3 months. Thaw in the fridge overnight and stir well before using.
FAQs
What do I serve nuoc cham with? It’s the classic dipping sauce for rice paper rolls and Vietnamese spring rolls, but I use it far more broadly than that. It works with grilled chicken, pork belly, cold noodle dishes, steamed dumplings and any Southeast Asian dish that wants a bright, sharp counterpoint. A bowl on the table alongside a spread of dishes rarely goes to waste.
Can I make it less spicy? Yes. Reduce the chilli or leave it out entirely for a mild version. Alternatively, add the chilli whole rather than chopped so it infuses gently without releasing full heat. You can also serve the chilli on the side so everyone can adjust their own bowl. The sauce works well without any chilli at all if you need it heat-free.