Why Some Canned Vegetables Taste Different Than Their Fresh Counterparts

There's no doubt about it: A can of green beans, corn, or peas can taste noticeably different from its fresh counterpart — you're not imagining that. And that difference in taste actually comes down to the canning process itself. Because canned vegetables need to stay shelf-stable and safe to eat for months (or even years), they have to be heated up during the canning process. The heat is what preserves the food, but it changes the texture and flavor, which is why you'll find canned vegetables are quite a bit softer. Fresh vegetables with bright flavors and colors become less pronounced when eaten from a can. 

The assumption naturally becomes that fresh vegetables are superior, but the reality is a little more complicated. While canning can change the consistency of the vegetable in question, it doesn't generally make it nutritionally less valuable. Some studies have shown canning to result in a decrease in vitamins in certain vegetables, but an increase in others, so the truth is that the nutritional value of canned fruit and vegetables can still be quite significant.

The heat from the canning process leads to much softer and less flavorsome vegetables, but they're also packed with excess liquid in the can, which can further affect their texture. That's why it is important to drain canned vegetables before using them, as there aren't many dishes that won't be affected by that influx of additional moisture. Then it's usually better to use them in cooked dishes as this will generally minimize any obvious differences in texture. Think soups, stews, and casseroles. 

You can also add canned vegetables to salads. Despite lacking that crunch of a fresh vegetable, sometimes their softer texture may even suit the salad. Add canned corn to a Mexican salad, for example, or canned green beans to a three bean salad. Because the canning process can mean a loss of some flavor, you can also improve the vegetables a little by first heating them through with oil, herbs, spices, or butter. 

Canned vegetables cannot replicate fresh vegetables exactly, but that's not what they're supposed to do. They have their own benefits, and all those flavor and texture differences are the result of the very process that allows them to last so long in the first place.