Just to let you know I can my beans differently than anyone I've ever met. I live in an area where gardens are a must and everyone cans to store for the winter months. My way of canning is NOT recommended by the USDA but my beans are delicious and I have been eating them this way all my life. I believe it's the vinegar that makes them safe to can and eat. Here it is and use at your own risk, but like I said, my granny's used this recipe for more than 40 years and we're all here and alive. We eat them at least 2 times a month, "we" meaning me and my extending family. We eat Sunday Lunch every Sunday with my granny.
copy & paste from another post
When canning green beans we would always put the "shelly beans" in with them and cook and can them together. I love canned green beans. We would string, break and shell beans. Measure them out in a gallon jug (over filled) which my granny calls a "cooker of beans". Each cooker of beans gets 1 quart of water, 1 cup of vinegar, 1/2 cup of salt and 1 cup of sugar. We would then cook the beans until they started to wrinkle a little and are dark green (about 20 minutes). Ladle the beans in quart jars almost to the rim. Then "find" the bean juice in the bottom and fill to the top with juice. Put a hot ring and lid on and wait for the popping sound of the seal. Any unsealed jars would be opened and refrigerated and eaten within the next couple of days. No waste. The beans we use were from my great-great grandmother. We grow a section of "seed bean" to save every year. I don't know what kind they are but they grow long "runners" and are very prolific.
I should add we wash the jars and dry them and put them in a warm oven to keep them hot for the hot beans to go in. We put the lids and rings in a pot of boiling water and have them hot too. I believe its for sterilization and it helps seal the jar. I do not know if this is the best way or even safe, but I'm 38 years old and I have canned beans every year with my granny since I was 8 years old.
eta: My granny said they are Indian Runner Beans
to cook canned beans: Open can and drain juice. Put in a pot and cover with water and bring to a boil. Pour off water and put new water and boil again. Ready to eat. You have to boil the vinegar out to get the taste right. No salt or seasonings needed. It's kind of pickled. We also do not water bath tomatoes, yep everyones' still alive and kicking. We can about 200 quarts and pints of each every year.