Most of us are cautious eaters.
If you’re munching grapes, you’ll probably skip one that’s all shriveled and discolored in favor of the round, healthy ones. Likewise, when you choose a can of food at the supermarket, you’ll likely choose one that’s exactly can-shaped, not one that’s misshapen and swollen.
There's a good reason for this.
A can of food can swell for two separate reasons. The first is what food scientists call “hydrogen swelling,” and it