How to Make Dehydrated Celery at Home - The Spruce Eats
Aug 16, 2019 Dehydrator Method. Arrange the celery pieces on the trays of a dehydrator, leaving 1/4-inch space on all sides between the pieces. If you are using an oven rather than a dehydrator, arrange the pieces on a screen placed over a baking rack. Dry at 135 F until the celery is crispy-dry. This usually takes 6 to 8 hours.
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