So, does panko go bad? Yes, but it’s a slow, quiet decay. It won’t scream at you like a rotten tomato. It just gets a little musty, a little clumpy, then eventually moldy. Keep it dry, keep it sealed, and freeze it if you’re a sporadic cook.
Remember: panko is a dry ingredient, but it’s not a mummy. It needs love, a cool pantry, and maybe a freezer nap. The next time you find that dusty box in the back, give it a sniff, a look, and a little squeeze. If it passes, bread away. If it doesn’t? Give it a proper funeral in the trash.
Now go make something crispy. You’ve earned it. And maybe check the date on that panko first—your taste buds will thank you.