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Health & Nutrition: Food Preservation

What causes mold or fermentation to occur in preserves?

• This could occur if the product was improperly sealed. Jars should be sealed airtight.

• Failure to process the finished product could cause some mold or fermentation. Process preserved products in a boiling water bath to protect against this.

• If the product is improperly stored, mold could form. Always store preserves in a dark, dry, and cool place.