Dehydrating Vegetables

Which vegetables dry well?

Tomatoes, peppers, onions, carrots, green beans, peas, corn, mushrooms from approved sources and leafy greens are among the vegetables with published drying guidance. Others, such as lettuce and cucumbers, do not dry well.

Check a tested source before you start, because preparation differs by vegetable. Pick vegetables at peak quality, since drying concentrates flavor and faults.

Dried vegetables are lightweight, so they suit camping and emergency kits as well as the pantry. Think about how you will use them before deciding how much to dry. Plan around your own cooking, because dried vegetables are best used in dishes you already make.

• Choose peak produce
• Check tested guidance for each
• Skip high-water salad crops

How do I prepare vegetables for drying?

Wash, trim and cut into pieces of similar size so they dry evenly. Many vegetables need blanching first to stop enzymes that would cause off flavors in storage. Tested sources say which ones and for how long, and I do not give times here.

Pat blanched pieces dry and spread them in a single layer. Avoid overlapping, which traps moisture.

Some vegetables, such as tomatoes and peppers, can be dried in halves or slices. Others, such as corn and peas, are dried whole after blanching. Follow your source for the shape. Cleaning the dehydrator between vegetables prevents flavors and residues from carrying over.

What settings and setup work best?

Use the dehydrator temperature that your manual and tested sources recommend, and avoid the temptation to turn it up to hurry things. Too much heat can harden the outside and leave moisture inside.

Place the dehydrator in a dry, ventilated area, and expect the process to take many hours. Rotate trays if needed. Keep strongly scented vegetables such as onions in a ventilated space, since the aroma spreads.

Run the dehydrator during hours you can monitor it, and check progress periodically. Rotate or swap trays only as your manual recommends so you do not lose heat. Use a timer and a notebook so you can repeat a good result.

How do I know vegetables are dry enough?

Most dried vegetables become brittle or leathery with no moisture inside when you break a piece. Cool a piece first and check. Tested sources give descriptions for each vegetable.

If you see any damp spots or the piece bends without breaking when it should be brittle, keep drying.

Different vegetables finish at different times. Remove pieces as they are done, not all at once, so you do not overdry the thin ones while waiting for the thick ones. Many people find that dried vegetables shrink more than they expect, so fill trays generously and expect a small yield.

How should I condition and store them?

Pack the cooled vegetables loosely in jars for a few days, shaking daily. If moisture appears inside the jar, return them to the dehydrator. Then store in airtight containers in a cool, dark, dry place.

Label with the vegetable and date. Consider small containers so you open only what you need.

A few days of conditioning in a clear jar lets you see any moisture. It is easier to correct at this stage than after the vegetables are in a sealed container in the pantry. Keep jars away from sunlight and heat, since light fades color and flavor.

How do I use dried vegetables?

Add them to soups and stews, where they rehydrate in cooking liquid, or soak them in water first. Use the soaking water in cooking when appropriate, and cook the vegetables thoroughly.

Smell and look at them before using. Discard any with mold, off odors or signs of insects or moisture.

Powdered vegetables, such as ground tomato or pepper, are made by grinding fully dry pieces. Store the powder in small airtight containers because it absorbs moisture quickly. Wash your hands and tools between batches to keep the work area clean.

What mistakes should I avoid?

Skipping the pretreatment that a vegetable needs, cutting uneven pieces, packing before the vegetables are fully dry, and storing in humid places are the most common mistakes. Another is drying vegetables with oils or marinades that are not covered by tested guidance.

Dry one vegetable at a time at first, to keep flavors from mixing and to learn how each behaves.

Keep a log of the vegetable, how you prepared it and how long it took. A little data makes next season's batches faster and more reliable. When in doubt about a vegetable, ask your extension office before you start.

Last reviewed: November 12, 2026. Written by the Homestead & Small Farm Editorial Team. See our editorial policy.