String, break green beans. Store them in a pillowcase in the fridge if you aren't going to can them right away.
Make sure your quart jars are clean, you can run them though the dishwasher.
Boil the lids and rims of the quart jars for a few minutes to ensure they are clean as well.
Cook broken green beans anywhere from 25-45 minutes (this will depend on your pot size). Beans are done when you see a difference in color. They will go from bright green to a more muted green and be soft to touch with a fork.
Add 1 tsp of salt to each one of the quart jars.
Then, using a funnel, pour in the cooked green beans to the top of each jar.
Screw on the lids by using tongs to get them out of the hot water. You may also need a dish towel to help you tighten the lids because the beans will make the jars hot.
Using rubber jar lifters, move the jars to where you are going to can them. We used a large copper boiler on an outdoor campstove. We also canned a few inside on the stovetop as well that wouldn't fit in the boiler. We did 16 in the boiler and then 6 inside. Make sure the water is boiling before you carefully place the jars inside to can.
Let the jars sit in the boiler for about 3 hours to can.
Carefully lift the jars out of the boiler using the rubber jar lifters again. Place them in a spot to cool. Do not try to move them around until they are completely cool. They are more prone to break when the jars are still hot.
Store your canned green beans once they are cool and bring them out to enjoy later on during the winter!