All About Corn kernels
Your complete guide to corn kernels - discover how to store it properly, identify when it's gone bad, and find the best substitutes for your recipes.
How Long Does Corn kernels Last?
Storage times and freshness tips for corn kernels in different conditions.
Safety first: This guide provides general information. When in doubt, throw it out! Trust your senses and err on the side of caution. If something smells, looks, or tastes off, don't consume it.
unopened canned (pantry)1-2 years (or by 'Best By' date)
Signs of Spoilage
Bulging or leaking can, rust, deep dents (especially along seams), foul odor upon opening, cloudy liquid, visible mold.
How to Check
Visually inspect the can for any damage (bulges, leaks, rust, severe dents). If the can appears compromised in any way, do not open or consume. Upon opening, check for an unusual smell; if it's off, discard immediately. Never taste food from a compromised can.
Storage Tips
Store in a cool, dry place away from direct sunlight and extreme temperature changes. While safe indefinitely if properly stored, quality is best within the recommended timeframe.
opened canned (fridge)3-5 days
Signs of Spoilage
Sour or unpleasant smell, cloudy or slimy liquid, slimy texture on the kernels, visible mold.
How to Check
Transfer contents to a clean, non-metallic, airtight container. Smell for any off-odors. Visually check the liquid for cloudiness or sliminess, and the kernels for any discoloration or mold. Touch the kernels; they should not feel slippery or slimy.
Storage Tips
Always transfer opened canned goods to an airtight, non-metallic container (glass or plastic) for refrigeration. Storing in the original can can impart a metallic taste and potentially leach metals.
raw in fridge (freshly shucked)3-5 days
Signs of Spoilage
Slimy or mushy texture, sour or fermented smell, dull or discolored kernels (e.g., dark spots), visible mold.
How to Check
Visually inspect for any discoloration or mold. Gently touch the kernels; they should feel firm, not slimy or soft. Smell for any off-odors, particularly a sour or yeasty scent.
Storage Tips
Store in an airtight container or a sealed plastic bag in the coldest part of your refrigerator. Do not wash until just before use, as excess moisture can accelerate spoilage.
unopened frozen (freezer)8-12 months (for optimal quality)
Signs of Spoilage
Significant freezer burn (dry, discolored patches), excessive ice crystals not part of normal frost, off-odor when thawed, dull or faded color.
How to Check
Visually inspect the package for signs of freezer burn. While safe indefinitely if kept frozen, quality degrades. If thawed and it has an off-odor or unusual appearance, discard.
Storage Tips
Keep the package tightly sealed to prevent freezer burn, which affects texture and flavor. Store at 0°F (-18°C) or below. Re-seal opened bags tightly or transfer to an airtight freezer-safe container.
cooked (fridge)3-4 days
Signs of Spoilage
Sour, fermented, or unpleasant smell, slimy texture, visible mold, dull or faded color.
How to Check
Smell for any off-odors. Visually inspect for mold or any unusual discoloration. Touch the kernels; they should not feel slimy or sticky.
Storage Tips
Cool cooked corn kernels rapidly and store them in a shallow, airtight container in the refrigerator within two hours of cooking to prevent bacterial growth. Do not leave at room temperature for extended periods.