01Thin slices, steady airflow

Dehydrating works by removing enough moisture that spoilage organisms can't grow — thin, even slices and consistent airflow are what make the difference between a good batch and an unevenly dried one.

02What you'll need

A food dehydrator, or an oven on its lowest setting with the door ajar
A sharp knife or mandoline for even slicing
Airtight storage containers for the finished product

03Method

1. Wash and slice produce evenly and thinly — consistency in thickness matters more than the exact thickness chosen.
2. Pretreat if needed (e.g. a brief blanch for some vegetables, a lemon dip for fruit prone to browning).
3. Arrange in a single layer with space between pieces for airflow.
4. Dehydrate at the appropriate temperature for the food, checking periodically.
5. Cool completely before storing in an airtight container — any residual warmth causes condensation and spoilage.

04Troubleshooting

Uneven drying — inconsistent slice thickness; aim for uniform pieces, and rotate trays if using an oven.
Mould after storage — not fully dried before storing, or stored while still warm; ensure produce is completely dry and cool first.
Leathery instead of crisp — often still has some residual moisture; extend drying time.
Off flavours — some produce benefits from pretreatment (blanching, acid dip) to preserve colour and flavour; research the specific food.

05Timing & maintenance

Best time

At harvest peaks, especially for fruit and produce with a short fresh shelf life.

Duration

4–24 hours per batch depending on the food and method.

Maintenance

None once dried and stored correctly — check periodically for any moisture getting in.

Signs of success

Produce is leathery to brittle depending on the food, with no cool or damp spots remaining.

06Tips & variations

Pairs well with

Root CellaringFreezing Produce

Common mistakes

Storing before produce and containers have fully cooledSlicing unevenly, leading to some pieces over-dried and others under-dried

Pro tip

Tomatoes, herbs, and stone fruit are particularly rewarding first projects — the flavour concentration from drying is dramatic.