How Long Does Cornstarch Last?

The shelf life of cornstarch depends mostly on how the cornstarch is stored. Cornstarch is a fine powder made from the starch in corn kernels. It is used mainly as a thickening agent in sauces, gravies and pies.

So, does cornstarch go bad? When stored properly, the answer is no! The shelf life of cornstarch is actually ...

Cornstarch Expiration Date

(Opened/Unopened) Pantry
Past Printed Date
Cornstarch lasts for Indefinite

All foods last for a shorter period of time if they are not stored properly. Like a lot of other baking products, it may have a best before date but will not have an expiration date. Because of this distinction, you may safely use it for your baking needs after the best before date has lapsed.

How to tell if Cornstarch is bad, rotten or spoiled?

Practicing proper hygiene and food safety techniques will help prevent foodborne illness.

Basically, the only way cornstarch will go bad is if it gets wet. Cornstarch basically disappears in warm liquid as the starch molecules bond with hydrogen molecules and then absorb the water. The sauce to which cornstarch is introduced first becomes cloudy and then translucent and thick. If your cornstarch has gone bad, check our substitutes page.

There are, of course, certain health risks associated with spoiled foods so always remember to practice food safety and enjoy your foods before their shelf life has expired!

How to store Cornstarch to extend its shelf life?

Cornstarch should be kept covered in a cool dark place (the pantry) away from moisture. The best way to store it is in its original container with the lid re-sealed. As long as it remains dry, it will remain safe to use since the shelf life of cornstarch is really indefinite.

Some benefits of proper food storage include eating healthier, cutting food costs and helping the environment by avoiding waste.

Interesting facts about Cornstarch:

  • When cornstarch is mixed with cold water, there is no reaction and the starch sinks to the bottom of the liquid.
  • Cornstarch works great to thicken gravy and much more.
  • How long is Cornstarch good for when prepared in a dish?

    How long does cornstarch last? That depends. How long does pie last? All foods can only last as long as the quickest expiring ingredient that they are mixed with in any recipe.

    What are our shelf life resources?

    In determining how long Cornstarch lasts, our content incorporates research from multiple resources, including the United States Department of Agriculture and the United States Food & Drug Administration. In addition, we scoured the web for informative articles and reports related to food safety, food storage and the shelf life of Cornstarch.

    *An important note about expiration dates...

    Although the Cornstarch shelf life information on Eat By Date is generally reliable, please remember that individual cases will vary and that our advice should only be taken as an opinion and not a replacement for your health care professional. Please eat responsibly!