Break off tips of beans; snap into bite sized pieces.
Wash, and drain.
Pack beans into hot, clean jars, as tight as you can get them, leaving 1″ head space.
Optional: Add 1/2 tsp salt to each pint jar, or 1 tsp salt to each quart jar.
Ladle boiling water into each filled jar, leaving 1″ head space.
Tap jars to remove air bubbles.
Put lids on jars.
Process pints for 20 min, or quarts for 25 min. at 10 pounds of pressure in a pressure canner.