Can Cornmeal Go Bad? – Risks of Consuming Expired Cornmeal

Does Cornmeal Go Bad?: Cornmeal is a staple product in a kitchen pantry. It is used to make many delicious foods like pizza, bread, and bagels. As it has so many uses and health benefits, the single package can be used for months or even years. If your cornmeal pack crosses best by date, then you might ask someone can cornmeal go bad.

The answer depends on many factors. Here you will get solution for various problems like how long does cornmeal last if opened, can you freeze cornmeal, what happens if you eat bad cornmeal, storage conditions, and so on.

can cornmeal go bad

Can Cornmeal Go Bad? How To Tell If Cornmeal Is Bad?

Yes, cornmeal can go bad. The two different types of cornmeal available are whole grain and degerminated. The whole grain con meal has the germ and degerminated doesn’t have the germ. Those two have a different shelf life as the germ has a higher percentage of kernel fat. These are the signs to tell that cornmeal has spoiled.

  • Mold or big wet clumps are present. If you found moisture or bacteria growth inside the cornmeal, then it is not safe to consume it.
  • Odd aroma. Like with pretty much any other food, make sure it passes the sniff test.
  • Some insects or bugs are present in the package. If you observe dead or alive insects or eggs in the cornmeal, then discard them.
  • Rancid or bitter smell or taste. It is applied to whole grain cornmeal as it has a high oil content.

How To Store Cornmeal Long Term?

Cornmeal should be stored in a dark and dry place just like other flours. And it should be placed away from moisture because the moisture makes your product clump. So, it is always better to store it in a sealed bag or container.

You can even store the unopened cornmeal in the pantry at room temperature. Once the package is opened, you can place it in the refrigeration or freezer. If you want to store cornmeal in the fridge or freezer, then it should be sealed tightly. Or use a freezer bag to store the cornmeal in the freezer.

Can you Freeze Cornmeal?

Yes, you can freeze cornmeal to increase its lifespan for more days. It will be the best option if you won’t use the cornmeal package for more days. The only thing you have to do is transfer the bag or cornmeal components into a ziplock or sealed container. Squeeze the air out of the container and place it in the freezer.

When you want to use the cornmeal, take the bag out of the freezer and place it in the refrigerator for the whole night to thaw. Once cornmeal is thawed, it is not recommended to freeze it again.

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Can Cornmeal Go Bad

How Long Does Cornmeal Last?

The whole grain corn meal will last for 6 to 12 in the freezer and degerminated cornmeal’s shelf life is up to 5 years in the freezer. Every cornmeal package has the best-by date on the label which means that the product maintains its quality by that date. But we can easily store either opened or unopened cornmeal after the expiration date.

Degerminated cornmeal has higher shelf life than whole-grain cornmeal at room temperature. You can store the cornmeal packages in the pantry if you want to use them 3 months after the best-by date, choose the refrigerator for more months. Or else go for the freezer to maintain the cornmeal quality good for even 1 year or more.

Pantry Fridge Freezer
Degerminated cornmeal Best by + 1 year Best by + 5 years
Whole-grain cornmeal (unopened) Best by + 3 months
Whole-grain cornmeal (opened) 3 – 6 months 6 – 12 months

How long does cornmeal last in the freezer

What Happens If You Eat Rancid Corn Meal?

Can Expired Cornmeal make you sick is a common question among people consuming cornmeal after a long time? In general, expired cornmeal is prone to insects and mold growing inside. If at all, you eat the expired cornmeal by any chance then you might get sick.

You might experience the symptoms like nausea, vomiting, and headache. If the portion consumed is less and if you have a strong immune system you might not get sick that easily.

Surprising Facts About Cornmeal

The different fun facts regarding cornmeal food items are provided here:

  • Cornmeal is a gluten-free product.
  • It has good sources of fiber.
  • Cornmeal is the grounded powder of dried corn.
  • When compared with other corn-based foods, cornmeal is higher in carbohydrates and has few vitamins and minerals.
  • Cornmeal has heart health and digestion benefits.
  • Cornmeal products like grits and polenta are good sources of vitamin B6 and folate.
  • It comes in yellow, blue, and white varieties.

FAQs on Does Cornmeal Go Bad

1. What does bad cornmeal smell like?

The bad cornmeal smells bitter or rancid and bad taste.

2. What happens if you eat expired cornmeal?

By eating rancid cornmeal, you may get stomach pain and nausea.

3. What does bad cornmeal look like?

The black and grey specs in whole-grain cornmeal are normal. Other than this, if you found any other color, then it has gone bad.

4. What’s the difference between whole-grain and degerminated cornmeal?

Corn meal is a coarse flour of dried corn. It can be available in white, yellow and blue colors. Corn kernels have germ, hull and endosperm parts. While degerminated corn meal has the germ removed. So, degerminated corn meal has less nutrition.


We wish that we have provided enough information on whether can cornmeal go bad. If you need more information on tips to store corn syrup, shelf life, how to tell if the flour has gone bad, etc visit our site. Bookmark our site for more articles on Can You Freeze Corned Beef and others.

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