Wash and trim the celery stalks you want to freeze.
Chop the stalks and add them to a pot of boiling water.
Let them soak in the hot water for 5 minutes.
Strain the celery and rinse them in cool water.
Allow the celery to dry and cool on a paper towel
Put them in a Ziplock bag. Be sure to push out as much air as possible.
You can store the bag in the freezer for a few months.
Notes
Cut the celery before freezing it so that you can easily add the frozen pieces to your hot food without going through the hassle of defrosting.
Strain the celery well after blanching because any water content left in there can make the celery go mushy. It’s better to blot out excess water with some paper towels prior to freezing it.
When blanching celery, set a timer so you can take it off the heat after exactly 5 minutes or it’ll overcook.
To cool down blanched celery quickly, soak it in ice water for 2 minutes. You can also run cold water through it to get the same results.