Vietnam has quietly claimed two places on TasteAtlas's freshly updated list of the world's best dipping sauces — and the higher finisher is the stuff you'll find on nearly every restaurant table in the country. Chili garlic fish sauce, the sour-salty-sweet condiment locals dunk everything into, scored 4.3 out of 5 to rank third out of 34, in a list published on September 15 and based on around 1,800 reader and expert ratings, of which more than 1,550 were verified.

In its simplest form, the sauce is a balance of lime juice (or vinegar), sugar, water and fish sauce. From there, cooks improvise: finely sliced chili, garlic, shallots, spring onions, ginger and fresh herbs all make regular appearances. Recipes shift from region to region, and even dish to dish — a nuance that explains why two bowls of the stuff rarely taste identical. It's the natural partner for chả giò (spring rolls) and bánh xèo (sizzling crispy pancakes), and just as likely to turn up beside grilled meats, seafood, noodles and soups.

Vietnam's second entry is a wilder proposition. Mắm nêm, a fermented fish sauce made by pounding whole anchovies rather than straining out the liquid, came in 15th with a score of 3.9. It's far punchier and funkier than the standard clear fish sauce, so it's usually tamed with sugar, chili, lime juice, pineapple and garlic before hitting the table. TasteAtlas's suggested pairing: bò nướng vị, Vietnamese lemongrass grilled beef, where the sauce's intensity cuts through the char and sweetness.

For travellers, this is a handy bit of homework before a food trip. The chili garlic sauce is your gentle entry point — bright, adaptable and served automatically with countless dishes, from street-side spring rolls in Ho Chi Minh City to noodle bowls in Hanoi. Mắm nêm is the one to seek out if you want to eat like a local: find it in central and southern Vietnam, often at grilling spots and casual eateries, and brace for an aroma that announces itself well before the plate arrives. Asking for a taste before committing to a full dish is a perfectly acceptable move.

It's also a good excuse to plan a day around dipping sauces. Watch how each restaurant tweaks its mix — some lean sour, some sweet, some fiercely hot — and don't be shy about complimenting a good one. Street food tours in Hanoi, Hue, Da Nang and Saigon will all pass through spring roll and pancake territory where these sauces shine, and cooking classes often teach you to mix your own, an easy skill to recreate at home.

Whether you're chasing the top-three condiment or the stinky-but-beloved fermented classic, Vietnam's dipping culture is a genuinely cheap, delicious thread to pull through any itinerary — no reservation required, just a table, a grill, and a small bowl of something wonderful.