Before dehydrating celery, you need to blanch it first. This helps to keep the lovely green colour of the celery. To blanch the celery:
Bring a large pot of water to the boil.
Wash the celery well, cut off the whitish bottom ends and the leafy tops, saving and freezing these for stock, if you wish or see below.
Cut the celery stalks into small pieces, about ½ inch thick crescents, and place them in the boiling water.
Leave them there for about 3 minutes, then remove and place in ice water.
If you are not dehydrating straight away, store in the fridge for up to 24 hours.
Dehydrating
Arrange the blanched celery pieces on the trays of a dehydrator, leaving space between the pieces.
Dry at 135˚F or 60˚C until the celery is crispy and dry. This takes around 6 - 8 hours.
If you are using an oven to dehydrate, place the celery pieces with space on lined baking trays.
Set the oven to the lowest heat setting, prop the oven door open with a spoon.
Remove from the oven when the celery is crispy and dry - around 6 to 8 hours later.
Nutritional information is an estimate and provided as a courtesy. The values may vary according to the ingredients and tools that are used. Please use your preferred nutritional calculator for more detailed information.