Out of Date Fish Sauce
Here’s my final test: pour a tiny drop on your finger and taste it. If it’s salty, savory, and a little funky—like a good Parmesan—it’s fine. If it’s bitter or makes you gag, toss it.
Your taste buds are smarter than a label. Trust them. They’ve saved you from bad avocado toast before; they can handle a splash of fish sauce.
And if you’re still scared? Just use it in a braise or a marinade. The heat will kill any lingering bacteria, and the flavor will deepen. It’s a win-win.