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How to Dehydrate Vegetables

Blanching times, drying temperatures and how dry is dry.

By The Dehydrator Report Editors · Updated November 11, 2026 · 4 min read

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Most vegetables need blanching before drying to stop the enzymes that fade color and flavor.

Blanching times

From Clemson Cooperative Extension.
VegetableSteam (minutes)Water (minutes)
Carrots3 to 3½3½
Green beans2 to 2½2
Corn, cut5 to 64 to 5
Peas32
Broccoli3 to 3½2
Onions, peppers, mushroomsNo blanchingNo blanching

Drying

Dry at 115 to 130°F, per Missouri Extension. Vegetables are done when brittle or crisp, about 10 percent moisture, per Clemson. Let a handful cool before testing; warm food feels softer, Alabama Extension notes.

Storage

About six months at 60°F or three at 80°F, per Clemson. Alabama Extension says use within 6 to 12 months, and carrots, onions and cabbage within six.

Pack dried food airtight once it's cool and conditioned. Our sister site explains vacuum sealing dried food and vacuum sealing mason jars.

Using them

See how to rehydrate dried food.

Sources

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