How Long to Cook Green Beans When Canning
When you're using a pressure canner to preserve green beans, you'll need to process them for 20 minutes if you're canning pints or 25 minutes if you're canning quarts. Be sure to follow the instructions that came with your pressure canner to make sure that you're using the right pressure setting for your altitude. You'll also want to let the jars sit in the canner for at least 10 minutes once you've released the pressure, so the jars can adjust to the temperature of the room a bit.
Keep in mind these safety tips for canning green beans:
- Never use a water-bath canner. Green beans are a low-acid food, so it's not safe to can them using boiling water unless you pickle the beans first.
- Always let the jars sit at least overnight, until they're completely cool, and then check the seal on each jar. If you press on the lid and it pops back up, eat that jar right away: It's not safe to store.