Lightly rinse the green onions in water.
After you've washed them, dry them off with a paper towel.
It's not necessary to wipe them completely dry!! It's ok if they're still a little wet.
After you've dried them, chop them finely and put them into a Tupperware for storage.
Put the lid on and store it into the freezer.
After 30 minutes to an hour, take out the Tupperware and shake it!! Repeat this step 3-4 times. Make sure you can feel the green onions moving around inside.
That's it. The picture shows how they look after 3 weeks. They're still nice and separated.