How long should you boil green beans?
raw about 10 to 15 minutes. Steaming.. about 15 to 20. canned ,precooked 5 min in boiling water, less if you like em crisp.5 to 7 if you steam. canned have a tendency to already be beyond the crispy stage. trial and error with the canned stuff. go with your prefference. check as you cook.
You can also cook them southern style. That is, for about 45 to 90 minutes. If your sense of smell is good enough you'll notice the change in smell of the beans. Also they will taste buttery. It never hurts to add some onions, pepper, and chopped country ham to the pot while they cook.