Recipes with Fish Sauce

Fish sauce is the salty soul of Southeast Asian cooking, a clear amber liquid made by fermenting anchovies with salt over many months until they break down into a deeply savoury extract. Where soy sauce anchors East Asian kitchens, fish sauce plays the same role across Thailand and Vietnam, supplying the umami base that makes a dish taste complete rather than merely seasoned.

What it is and how it tastes

Small fish, usually anchovies, are packed with sea salt and left to ferment for many months, slowly liquefying into a pungent, protein-rich brew that is then drained and aged. The first press yields the finest, most aromatic sauce, much as a first cold pressing yields the best oil. In the bottle it smells boldly of the sea, but that intensity is the point: a small amount delivers a rounded, savoury saltiness with a long finish rather than any fishy flavour once cooked. Quality varies widely, so the better bottles, often labelled first press or with a high anchovy content and a short ingredient list, taste cleaner and less harshly salty than the cheaper, murkier sauces bulked out with additives.

How to use it

Fish sauce seasons from behind the scenes. It is the backbone of countless dipping sauces, balanced against lime, sugar and chilli, and the seasoning that brings a curry or stir-fry to life. Add it during cooking so its sharp aroma softens into savoury depth, or use it raw in dressings where its bright punch is wanted. Treat it like salt: start small, taste, and build up. In a Vietnamese dipping sauce it is diluted heavily with water, lime and sugar to a mellow, balanced seasoning, while in a Thai stir-fry a single tablespoon may carry the whole dish. Brands differ markedly in strength and saltiness, so let the palate, not the recipe, set the final amount, and remember it is far easier to add more than to rescue an over-seasoned pot.

Buying and storing

Choose a bottle made simply from fish and salt, with a clear amber-to-reddish colour rather than a cloudy, dark brown. Higher anchovy ratios and first-press labels signal better quality, and a glass bottle generally holds a sauce that has been treated with more care. Once opened it keeps for a year or more in the cupboard thanks to its high salt content, though refrigerating slows the natural darkening and preserves the fresher aroma for longer.

Where it shines and substitutes

Fish sauce is essential to a balanced pad thai, to the hot-and-sour broth of tom yum goong, and to the fragrant stir-fry pad krapow chicken. When it must be left out, soy sauce with a pinch of salt is the nearest swap, though the marine depth will be missing. For more on building a pantry around it, see the Asian pantry guide.