Canning green beans

Asked July 26, 2020, 11:20 AM EDT

I canned green beans and they all sealed. Two unsealed the next day and I put them in the fridge to keep cold. Are they still good to eat? Then another one unsealed 2 days later. I put it in the fridge. Is it safe to eat? I Used the canning process of putting the jars in the oven to sterilize. I’ve done it several times with no problems. Learned it from an older lady years ago.

Greenup County Kentucky

1 Response

Sadly, even though people keep trying to find easier ways to can food, oven canning is not recommended. Here is the research based statement from the National Center for Home Food Preservation.

"Is it safe to process food in the oven?
No. This can be dangerous because the temperature will vary according to the accuracy of oven regulators and circulation of heat. Dry heat is very slow in penetrating into jars of food. Also, jars explode easily in the oven."

Green beans are a low acid food, and they require pressure canning in order to be sure that the entire jar reaches a temperature hot enough to destroy any harmful organisms that might be inside.

Eating green beans that have been canned any way other than in a pressure canner means that there is a risk for contracting botulism, which can be deadly.

Many more answers and complete information on safe ways to can foods at home are available from your county extension office.

Greenup County Office
35 Wurtland Ave.
Wurtland, KY 41144
Phone: (606) 836-0201

or from

The National Center for Home Food Preservation,

All canning information from these 2 sources is based on research so that it is the most up to date information available.