Problems and solutions

Problems with home-canned foods can involve failed seals, liquid loss, discoloration, cloudiness, spoilage or use of an incorrect process. Some defects affect quality; others can signal a serious safety problem.

Never taste food from a leaking, bulging, unsealed or otherwise suspicious container. If the jar spurts liquid or foam when opened, or the food is moldy, discolored or has an abnormal odor, do not eat it.

When a processing error is discovered, consult current USDA/NCHFP guidance rather than guessing whether the product is safe. The appropriate response depends on the food, method used and how much time has elapsed.

RECOMMENDED RESOURCES

Home-Canned Foods — CDC

Signs of possible contamination and guidance on when to discard home-canned foods.

Canning — NCHFP

Research-based canning procedures and troubleshooting information.

Ensuring High-Quality Canned Foods — NCHFP

Guidance on obtaining and maintaining high-quality home-canned foods.

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