Problems
Sterilization problems
These pages gather the typical situations that make preserves spoil, lose flavor, or become questionable during storage.
Why jars explode
Why jars explode and when it is unsafe to consume the contents.
Why jars crack during sterilization
Why jars crack and how to prevent it.
Forgot to sterilize jars: what to do
What to do if jars were not sterilized and when it becomes unsafe.
How to tell if sterilization was insufficient
Learn how to recognize insufficient sterilization and when it is unsafe to consume preserved food.
Air Pockets in a Jar
Why air pockets appear in jars and whether they are safe.
Wet jars before sealing
Is it safe to use wet jars and what it means.
Insufficient jar sterilization
Insufficient jar sterilization: what causes it, what to check first, and how to prevent it in future batches.
Jars cracking during sterilization
Why jars crack during sterilization, what causes it, and how to prevent it.
Jar cracked during canning
Why jars crack during canning, what to check first, and how to prevent it next time.