How Long to Dehydrate Fruit: Tips and Doneness Tests

On this page (12 sections)

1. What changes drying time for each fruit?
2. Does your dehydrator change how long fruit takes?
3. What temperature should you hold fruit at?
4. How should you space fruit on the trays?
5. How do you slice fruit into even pieces?
6. Should you pretreat fruit before drying?
7. Can you make fruit leather in a dehydrator?
8. How do you tell when dried fruit is done?
9. What mistakes slow fruit drying?
10. When should you pull finished pieces off the tray?
11. Tests by fruit: what to watch for
12. How long to dehydrate fruit comes down to testing

How long to dehydrate fruit comes down to one fact: it takes a few hours to more than a day, depending on thickness, juiciness and airflow.

This guide skips per-fruit hour charts on purpose. Your manual and the National Center for Home Food Preservation give exact settings, and this page shows how to cut, load and test so you know when a batch is done.

What changes drying time for each fruit?

Thickness, juiciness and whole versus cut pieces change the clock more than the fruit's name does. Thin, even pieces dry faster and more evenly, so cut the batch to one thickness before it goes on the tray.

Air moves across the trays and carries moisture away, so airflow matters as much as heat. How a food dehydrator works explains that airflow in plain terms.

How long to dehydrate fruit by thickness

A thick wedge holds more water than a thin slice of the same fruit, so it takes longer to dry through. Thickness is also the one variable you fully control, so set it first.

Mixed sizes cause trouble, because the small pieces finish while the big ones are still soft.

Whole fruit and small pieces

Whole fruit has more water to lose before it dries, and its skin slows the process further. Halve or slice it when you can.

Small pieces can slip between the bars of a tray, so a fine-mesh liner keeps them in place.

Cut the sheets to fit each tray, since they come in one 14 by 14 inch size. DOSTK says they wash at the sink or in the dishwasher, which helps with sticky fruit juice.

Trays, mesh sheets and liners compares the options in more detail.

Does your dehydrator change how long fruit takes?

Yes, because fan layout and load size both shift the time. The same fruit can finish earlier in one machine than in another.

Excalibur says its Hyperwave Pulse technology and horizontal airflow dry evenly without tray rotation, and Magic Mill says the Pro's rear fan does the same. A machine built differently may need a tray swap partway through, so check your manual before you skip it.

A full load holds more water than a half load, so a packed machine needs more time. Test before you pull anything.

What temperature should you hold fruit at?

Hold one low, steady setting from your manual's chart for the whole run instead of changing it every hour. Steady heat lets the pieces dry at about the same pace, so the batch finishes together.

Your manual's chart gives a starting setting for each fruit, so begin there. Change the setting only if the pieces are still wet after the time the chart suggests, and test before you adjust.

How should you space fruit on the trays?

Spread pieces in a single layer with a gap between them, so warm air can reach every side. Crowded pieces trap moisture between them, and the ones in the middle stay damp longer.

Check the trays now and then, and move any piece that feels wetter than the rest. Excalibur's Select has glass French doors, so you can look in without opening it.

If you want a metal-tray machine for fruit, best stainless steel food dehydrators compares the stainless models side by side.

How do you slice fruit into even pieces?

Use a sharp knife or a handheld mandoline and keep the thickness the same for every piece. A mandoline helps most when you're slicing a big batch of apples or pears.

Keep your fingers behind the food holder, and cover the blade between batches. OXO says the holder protects your hands while you slice and covers the blade when you're done.

Peeling and pitting first

Peel fruit with a thick or tough skin, and remove pits or cores before you slice. Cutting to the final size before the tray saves you from sorting pieces later.

Slice across or lengthwise

Round slices suit apples and pears, and lengthwise strips suit peaches and mango. Either way, keep every piece close to the same thickness.

Should you pretreat fruit before drying?

Pretreatment is optional. Some fruit darkens as it dries, so many people pretreat apples, pears and peaches.

The National Center for Home Food Preservation explains the options and how to use them. If darker fruit doesn't bother you, you can skip the step.

Can you make fruit leather in a dehydrator?

Yes, but fruit leather needs a solid sheet, not mesh. It's a puree spread on the sheet, so mesh would let it run through.

Spread the puree thin and even, since thick spots take the longest to dry. Magic Mill says the Pro comes with a fruit roll tray, so the sheet is in the box.

The finished leather should peel off cleanly and feel flexible rather than tacky. Test it the same way you test other dried fruit before you roll it up.

How do you tell when dried fruit is done?

Dried fruit should feel pliable and leathery, and it shouldn't feel sticky or wet when you tear it. Test a piece from the middle of the batch, since damp pieces tend to hide there.

Tear a thick piece in half

Cut or tear a thick piece in half and look for moisture in the center. If you see beads of moisture or the middle feels damp, keep drying and test again later.

Let pieces reach room temperature

Warm fruit can feel softer than it will once it cools. Let a few pieces reach room temperature before you decide, then test them again.

What mistakes slow fruit drying?

Crowded trays, mixed thicknesses and frequent door openings tend to slow a batch down. Fix those first, before you change the temperature.

Opening the door too often

Each time you open the door, warm air escapes and the trays take longer to recover. If your machine has a window or glass door, check through it, and open the door only to test or move a tray.

Mixing thick and thin pieces

Thin and thick pieces on the same tray finish at different times, so you end up pulling some early and waiting on others. Sort the fruit by thickness, and dry each group on its own tray if you can.

When should you pull finished pieces off the tray?

Pull each piece as soon as it passes the pliable test, and leave the rest in place. Pulling done pieces early keeps them from over-drying while the wetter ones catch up.

Let finished fruit cool before you pack it, and follow the NCHFP guidance for how to store it.

Tests by fruit: what to watch for

Each fruit dries at its own pace, so test the thickest piece in each group before you pull the tray. The groups below cover most of the fruit people dry at home.

Apples and pears

Thin apple and pear slices turn pliable before thick rings or wedges do. Check the thick ones again if the center feels springy and damp, since they need more time.

Berries and grapes

Small berries and grapes hold a lot of juice, and whole grapes have their skin to get through. Cut larger berries in half, and test a piece from the middle of the tray before you stop the machine.

Peaches, mango and other thick fruit

Halves and thick slices of peaches or mango hold more water than thin slices. Cut them thinner when you can, and check the thickest piece in the batch, since it usually finishes last.

Bananas and other soft fruit

Soft fruit like bananas can turn sticky in the center before the outside looks done. Cut the slices evenly, and test the thickest one first.

How long to dehydrate fruit comes down to testing

No chart gives one exact time for every batch, so cut to one thickness, load a single layer and test the thickest piece. Keep drying until it feels pliable and leathery.

Herbs follow their own steps, so how to dehydrate herbs covers them separately. Vegetables finish with a crisp test instead, which how to dehydrate vegetables explains.

If you're choosing a machine for a whole harvest, best food dehydrators for herbs and garden produce compares models for that job. For the machines in general, food dehydrators for jerky is our main guide, and the garden harvest drying guides gather the rest of this topic in one place.

Frequently asked questions

How long does it take to dehydrate fruit?

Most fruit takes from a few hours to more than a day. Thickness, juiciness and how full the trays are change the time, so check your manual and the National Center for Home Food Preservation, then test the thickest piece by hand before you stop the machine.

How do you know when dehydrated fruit is done?

Dried fruit should feel pliable and leathery, with no stickiness or wetness when you tear it. Tear a thick piece in half and look for moisture in the center, since the middle dries last, and keep drying if you see any.

Why does some fruit take longer to dry than others?

Juicy fruit holds more water, and whole pieces give that water a longer path out, so both take longer than thin slices. Cut pieces to one thickness and sort mixed fruit onto separate trays, so each tray finishes at its own pace.

Should you pretreat fruit before drying it?

Pretreatment is optional, and many people use it to slow browning in fruit like apples, pears and peaches. The National Center for Home Food Preservation explains the options, so read its guidance before you pick one, or skip it if darker fruit doesn't bother you.