Clean the celery: Rinse the celery stalks under cool water to remove any dirt or debris. Be sure to clean all parts, including the leaves and ends, which you’ll use for broth later.
Chop the celery: Cut the celery into desired sizes. For general cooking, you might want to dice the stalks into small, bite-sized pieces. You can also cut larger pieces if you know how you’ll use them in the future.
Separate the leaves and ends: Set aside the celery leaves and the ends (the parts that might not work well in recipes) in a separate pile. These will be frozen separately for broths.
Freeze the celery stalks: Add 1 cup of the celery pieces to a labeled ziplock bag or airtight container.
Freeze the celery leaves and ends: Place the leaves and ends into a separate labeled ziplock bag. These can be used in homemade broths. Seal the bag, removing as much air as possible, and store in the freezer for up to 12 months.