Dehydrator
A food dehydrator is a countertop cabinet of stacked trays with a fan and a heater, usually adjustable from about 35 to 70°C, that dries food slowly in moving warm air. In a bar it makes dried citrus wheels and fruit slices for garnish, like the dried orange wheel on our Aperol Sour. Dried right through and kept airtight, they last for weeks rather than a single session.
About the Dehydrator
Warm Air, Moving Slowly
A dehydrator holds food at a low, steady heat while a fan carries the moisture away. Fruit dries from the outside in, and the moving air stops the space round each piece from turning damp.
In a bar that means garnishes that keep: dried orange, lemon and lime wheels, apple and pineapple slices, and peel for infusions. Our Aperol Sour carries a dried orange wheel on the rim.
Dehydrator, oven and fresh garnish compared
Dehydrator
- Temperature
- Usually around 55 to 60°C
- Time for citrus wheels
- Often six to twelve hours
- Result
- Dry, flat, keeps its colour
Oven, lowest setting, door ajar
- Temperature
- Often hotter than a dehydrator
- Time for citrus wheels
- Several hours
- Result
- Browner and sweeter; ties up the oven
Fresh wheel
- Temperature
- Not dried
- Time for citrus wheels
- Cut to order
- Result
- Juicy and bright; use within the session
| Method | Temperature | Time for citrus wheels | Result |
|---|---|---|---|
| Dehydrator | Usually around 55 to 60°C | Often six to twelve hours | Dry, flat, keeps its colour |
| Oven, lowest setting, door ajar | Often hotter than a dehydrator | Several hours | Browner and sweeter; ties up the oven |
| Fresh wheel | Not dried | Cut to order | Juicy and bright; use within the session |
Dry It Right Through
Slice evenly, around 3 to 5mm, and lay the slices in one layer. Most makers suggest around 55 to 60°C for fruit.
Citrus wheels often take six to twelve hours. Judge by the result: a cooled wheel should feel dry to the centre and snap rather than bend.
Food Safety From Fruit to Jar
Wash the fruit under running water and dry it before you slice it, on a clean board with a clean knife. The peel ends up on the glass, and on the lips of whoever drinks from it.
Moisture left in the middle of a slice is what lets mould grow. Under-dried fruit spoils in the jar, even when it looked done on the tray.
Cool the batch fully, pack it into a clean, dry, airtight jar and write the date on it. Throw the whole jar away if any piece shows mould, not only the piece you can see it on.
An Oven Will Do for the Odd Batch
An oven at its lowest setting, with the door slightly open, dries fruit too. Most run hotter than a dehydrator, so the slices brown and taste more of caramel.
If you garnish with dried fruit often, a dehydrator saves tying up the oven for half a day.
Using the Dehydrator
Usage
Drying citrus wheels, apple and pineapple slices and chillies for garnish, and drying peel for infusions. Fruit is usually dried at around 55 to 60°C, as most makers suggest, until it is dry to the centre.
Pro Tip
Test a wheel from the middle of the batch, not the edge. If it bends rather than snaps once it has cooled, give the whole batch longer.
Professional Tips
- Slice evenly, around 3 to 5mm, so every piece dries at the same rate.
- Lay the pieces in one layer, with space between them for air.
- Swap the trays round partway through if the top and bottom dry unevenly.
- Let everything cool fully before it goes in a jar.
Alternatives
Budget Alternative
An oven on its lowest setting with the door slightly open. It works for an occasional batch, though most ovens run hotter than a dehydrator, so the fruit tends to brown and taste of caramel.
Premium Option
A larger machine with slide-out trays and the fan at the back, which is usually said to dry more evenly than a stack with the fan underneath and saves swapping trays.
Specifications
Material
Plastic or stainless steel cabinet with stacking or slide-out trays
Capacity
Usually four to ten trays
Details
Fan and heater with an adjustable thermostat, usually about 35 to 70°C, and often a timer
More to explore
Common Questions
What can I make in a dehydrator for cocktails?
How long does it take to dry orange wheels?
What temperature should a dehydrator be for fruit?
How do I store dried garnishes safely?
How long do dried citrus wheels last?
Can I dry citrus wheels in the oven?
Do I need to wash fruit before drying it?
Made with the Dehydrator
Used In These Cocktails
Related Equipment
Guide by Jerry Can Spirits · Updated 10 October 2026