How to Dehydrate Vegetables From Your Garden

On this page (11 sections)

1. Which vegetables should you start with?
2. How do you slice vegetables for even drying?
3. Which vegetables need blanching before they dry?
4. What temperature should you hold vegetables at?
5. How should you load the trays?
6. How do you handle a big harvest day?
7. How do you tell when dried vegetables are done?
8. How do root vegetables, greens and peppers differ?
9. How do you clean the trays between batches?
10. How should you store dried vegetables?
11. Test one tray before you dehydrate vegetables from the whole harvest

Knowing how to dehydrate vegetables comes down to three steps: prep the produce, slice it evenly and dry it until it's crisp. Garden vegetables finish brittle rather than leathery, so the test you use for fruit doesn't fit them.

This guide covers prep, slicing, blanching, loading and doneness. It leaves out hour charts, because the National Center for Home Food Preservation (NCHFP) and your machine's manual give the exact settings.

Which vegetables should you start with?

Start with firm, fresh vegetables, and trim away bruised or soft spots before you cut anything. Drying doesn't fix produce that's already past its best, so pick what you'd happily eat fresh.

Wash, trim and sort by size

Wash each vegetable under running water, then dry it well before you cut. Sort the pieces by size, since similar sizes finish at about the same time and are easier to judge.

Cut away woody cores and tough ends too, since those parts dry more slowly than the tender flesh and can leave chewy spots.

How do you slice vegetables for even drying?

Slice vegetables thin and to one thickness, since thin, even slices dry faster and more evenly. A slicer with a thickness dial helps you keep every piece the same.

Keep the safety guard on for small pieces, and keep your fingers clear of the blade. Benriner says the guard holds smaller pieces and protects your fingers.

How to dehydrate vegetables in thin, even slices

Thin rounds and strips dry faster than chunks, because less of each piece has to lose water. Matchsticks and small dice finish sooner than thick coins, so dry each shape on its own tray.

Which vegetables need blanching before they dry?

Many vegetables need blanching before they dry, which means a short heat treatment in boiling water or steam. Blanching helps many vegetables keep their color and flavor through drying.

Not every vegetable needs it, so check the NCHFP guidance for each one and follow its method and timing exactly. This page gives no blanch times, because they differ from one vegetable to the next.

Cool and drain after blanching

Move blanched pieces into cold water to stop the cooking, then drain them well. Wet pieces slow the dryer down, so pat or shake them dry before they go on the tray.

Spread them in one layer while they dry, so they don't steam against each other.

What temperature should you hold vegetables at?

Hold one steady temperature for the whole batch rather than chasing the pieces with changes. A steady setting makes it easier to tell which pieces are running behind, and it makes your notes from one batch useful for the next.

Check the drying chart in your manual for a starting point, then use the crisp test to decide when to stop. The pieces themselves tell you when they're done.

How should you load the trays?

Spread vegetables in a single layer with space between them, so warm air can move across every side. A deep pile traps moisture and slows the batch, so keep the trays thin rather than full.

Leave a little room at the edge of each tray as well, so air keeps moving around the outside pieces.

Put one kind of vegetable on each tray, since different vegetables finish at different times. You can then pull a finished tray without disturbing the rest.

Check the trays partway through, and move any piece that looks wetter than the rest. If your harvest fills several trays, best large food dehydrators lists the bigger units, and garden produce picks covers the herb and produce side.

Line trays for small pieces

Diced vegetables and small pieces can fall through the rack, so a fine-mesh liner keeps them in place. Lova says its sheets come pre-cut to 14 by 14 inches and trim to fit most standard trays with household scissors.

Purees and wet mixes need a solid liner instead of mesh, so keep the mesh for cut vegetables. Trays, mesh sheets and liners compares the options side by side.

How do you handle a big harvest day?

Work in small rounds: prep one vegetable, load its trays, start the machine, then move on to the next. Garden vegetables ripen in a rush, and a steady rhythm beats one giant pile of cut produce waiting on the counter.

Count trays against your peak week, not an average one. Ten trays like the Cosori's give you three more shelves per run than the Magic Mill Pro's seven, and how to choose a food dehydrator explains how to size a machine to your garden.

How do you tell when dried vegetables are done?

Dried vegetables should feel brittle or crisp, with no soft or damp spots when you break one open. Herbs dry on a different test, so how to dehydrate herbs covers them separately.

Break a thick piece open

Break a thick piece in half and look for damp or soft spots in the center. Any soft spot means that piece needs more time, so put it back on the tray.

Write down which vegetable took the longest and how thick it was, so the next batch starts closer to done.

Test pieces after they cool

Cooling changes the feel, so test a few pieces once they've reached room temperature. Crisp pieces should snap or crumble cleanly rather than bend.

Why do vegetables finish crisp instead of leathery?

Most vegetables hold less natural sugar than fruit, so they dry hard instead of chewy. That's why a vegetable that still bends is probably damp inside.

How do root vegetables, greens and peppers differ?

Root vegetables, leafy greens and peppers each show a crisp finish a little differently, so test each group by feel. Use the same break-open check for all three.

Root vegetables

Carrot and beet slices should feel hard and brittle all the way through. If the center bends or feels leathery, return those pieces to the tray for more time.

Leafy greens

Kale and other leafy greens should crumble when you press them, with no damp spots near the stems. Thick stems take longer, so pull the leaves once they're crisp and leave the stems for a final check.

Peppers and onions

Pepper and onion pieces should feel brittle, not chewy, when you cut into a thick piece. Onions can look dry on the outside while the center stays soft, so break one open before you stop the machine.

How do you clean the trays between batches?

Wash trays and liners between batches, and dry them fully before the next load. Leftover residue can cling to the trays and carry into the next run.

Most trays wipe clean with warm, soapy water, and Lova says its silicone sheets can go on the top rack of a dishwasher. Check the care label on each part first, since some trays and liners need different handling.

How should you store dried vegetables?

Pack only vegetables that are fully dry and cool, since moisture left inside works against the crisp finish. Follow the NCHFP guidance on containers and storage, and check the pieces again before you seal them.

Dried vegetables go into soups, stews and sauces, where they soften as they cook. Dry them in the form you plan to cook with, such as thin slices for stews or small dice for sauces.

Test one tray before you dehydrate vegetables from the whole harvest

Dry one tray first to learn the crisp finish for each vegetable, then dehydrate the rest of the harvest with the same settings. Once you know how a vegetable behaves, the rest of the batch gets easier to judge.

How long to dehydrate fruit covers the fruit side of the same process, since fruit finishes leathery instead.

For the machines themselves, food dehydrators for jerky is our main guide. The garden harvest drying guides gather the rest of this topic in one place.

Frequently asked questions

How do you dehydrate vegetables at home?

Wash and trim the vegetables, slice them thin and even, blanch the ones that need it, then dry them in a single layer. Check the National Center for Home Food Preservation for each vegetable, and stop when the pieces are brittle or crisp all the way through.

How do you know when dehydrated vegetables are done?

Dried vegetables should feel brittle or crisp, with no soft or damp spots when you break one open. Cool a few pieces to room temperature first and test the thickest one, since warm pieces feel softer and thick pieces finish last.

Do all vegetables need blanching before drying?

No, but many do, and blanching helps many vegetables keep their color and flavor. The National Center for Home Food Preservation lists which vegetables need it and how to do it, so check that guidance before you start rather than guessing.

What is the best way to slice vegetables for a dehydrator?

Slice every piece to one thickness so the batch dries at about the same pace. A handheld mandoline with a thickness dial makes that easier than a knife, especially for a big garden harvest, and thin rounds and strips dry fastest.