Can I Eat Expired Cornstarch?

Safe up to 180 days after expirationLast updated: 3/30/2025

Safe to eat up to 180 days after expiry

Low Risk

Expert Source

"According to the CDC, cornstarch should be stored in a cool, dry place at room temperature and used within one year for best quality."

Fresh Cornstarch

Fresh Cornstarch

⚠️Spoiled Cornstarch

Spoiled Cornstarch
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Storage Guidelines

Storage Location

Pantry

Ideal Temperature

Room temperature

Best Storage Method

Store in a cool, dry place

Shelf Life

Average Shelf Life

730 days

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Signs of Spoilage

Clumping, off smell

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Additional Information

Alternative Uses

Use as a thickening agent

Possible Substitutions

Arrowroot powder, flour

Frequently Asked Questions

What's the difference between expiration and best quality dates for Cornstarch?

Cornstarch, like many dry ingredients, does not have a strict expiration date but rather a 'best by' date. This date indicates the period of time during which the product is expected to retain its optimal quality in terms of taste and performance. While cornstarch may still be safe to use after the 'best by' date, it might not perform as effectively in thickening sauces or gravies.

How can I tell if Cornstarch has gone bad?

To check if cornstarch has gone bad, look for any discoloration, mold growth, or unusual spots on the surface. Sniff the cornstarch for any musty or off odors. Lastly, feel the texture of the cornstarch - if it feels clumpy, hardened, or has changed in consistency, it is best to discard it.

What are the food safety risks with Cornstarch?

Cornstarch is a low-risk ingredient when it comes to foodborne illness. However, it is important to store it in a cool, dry place away from moisture and heat to prevent clumping or spoilage. Always check for signs of pests or mold before using cornstarch in recipes.

What are some pro tips for storing Cornstarch?

To prolong the shelf life of cornstarch, store it in an airtight container in a cool, dry place away from direct sunlight. Avoid storing cornstarch near strong-smelling foods as it can easily absorb odors. If your cornstarch has clumped together, you can break up the clumps by gently pressing them with the back of a spoon or using a sieve to sift it before use.

Any interesting facts about Cornstarch?

Cornstarch is a versatile ingredient used in various cuisines around the world. In Chinese cuisine, cornstarch is commonly used as a thickening agent for sauces and soups. It is also a key ingredient in making crispy coatings for fried foods in American cooking. Additionally, cornstarch has non-culinary uses such as in the production of biodegradable plastics.

Expiration Calculator

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Sources

For more information on food safety and expiration guidelines, visit our Sources page.

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Recipes Available

We have recipes that can help you safely use cornstarch past its expiration date!

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Reviewed By: Food Safety & Expiration Experts

At Can I Eat Expired, we are committed to providing accurate, science-backed information about food expiration and storage safety. Our content is carefully reviewed based on guidelines from leading food safety organizations, including:

🔍 How We Ensure Accuracy

  • We use official food safety sources to guide our recommendations.
  • Our team continuously reviews and updates content based on the latest research.
  • We encourage users to always check for signs of spoilage and follow proper storage guidelines.

📚 Have Questions?

If you have specific concerns about food expiration or safety, we recommend consulting a registered dietitian, food scientist, or your local health department.

Note: These are general guidelines. Always use your best judgment and when in doubt, throw it out.