Wash the green beans thoroughly
Trim off the stem ends
Cut into desired lengths, if needed
Bring a large pot of water to a rolling boil
Prepare a bowl of ice water
Add the green beans to the boiling water
Blanch for 2 to 3 minutes
Remove the beans quickly with a slotted spoon or drain them
Immediately transfer the beans to the ice water
Cool for the same amount of time they were blanched
Drain the beans well
Pat dry with a clean towel
Pack into freezer bags or containers
Remove as much air as possible
Label with the date
Freeze immediately