Why do canned goods take such a long time to expire?

Question

Like how can you eat meat and fish years after production?

In: 388

Answer 1

What you call “spoiling” is basically the poop of bacteria. It gets on food, it eats the food and multiplies, and poops out toxins. This is why even if you full cook spoiled food youll get sick if you eat it, because the toxins aren’t alive and dont die when you cook it.

So, when you can, there are going to be a small amount of bacteria on the food to start, but not nearly enough to make you sick. When you can, you heat up the inside enough to kill any bacteria, then you seal the can, so new bacteria cant get inside.

So even after 5 years, there’s still no bacteria in the can, and so the food will till be good.