How to Use a Dehydrator (Apples, Bananas, Herbs, Onions & Garlic)
Learn how to dehydrate apples, bananas, herbs, onions, and garlic at home using a dehydrator. This step-by-step guide helps you preserve food, reduce waste, and build a working pantry with shelf-stable ingredients.
Prep Time15 minutes mins
Active Time12 hours hrs
- Apples any variety
- Bananas
- Fresh herbs parsley, basil, oregano, thyme, etc.
- Onions
- Garlic
- Optional for apples/bananas:
- Lemon juice to prevent browning
- Water
General Dehydrator Setup
Wash all produce thoroughly and pat dry.
Slice evenly to ensure consistent drying.
Arrange in a single layer on dehydrator trays (do not overlap).
Set dehydrator temperature based on food type (see below).
Rotate trays if your dehydrator does not have a rear fan.
Dry until food is fully dehydrated (no moisture, leathery or brittle depending on item).
Apples (Slices or Chips)
Core apples and slice into ¼-inch rounds or wedges.
Optional: Soak in a mixture of 1 tablespoon lemon juice + 1 cup water for 5 minutes to prevent browning.
Place slices in a single layer on trays.
Dehydrate at 135°F for 6–10 hours.
Apples should be leathery and slightly flexible when done.
Bananas (Chips or Slices)
Peel bananas and slice into ¼-inch rounds.
Optional: Dip in lemon water to reduce browning.
Arrange on trays without overlapping.
Dehydrate at 135°F for 6–10 hours.
For chewy bananas, remove earlier. For crisp chips, dry longer until fully firm.
Fresh Herbs
Remove stems and rinse gently if needed. Pat completely dry.
Spread leaves loosely on trays.
Dehydrate at 95–105°F for 2–4 hours.
Herbs should crumble easily when fully dry.
Onions
Peel and slice onions into thin rings or small diced pieces.
Separate layers for even drying.
Spread evenly on trays.
Dehydrate at 125–135°F for 8–12 hours.
Onions should be completely dry and brittle.
Garlic
Peel cloves and slice thinly or mince.
Spread evenly on trays.
Dehydrate at 125–135°F for 6–10 hours.
Garlic should be crisp and fully dry.
Final Steps
Properly dried food should have no visible moisture and feel leathery or brittle depending on the item.
Let food cool completely before storing.
Condition fruit (like apples/bananas) by storing loosely in a jar for a few days and shaking daily—if moisture appears, return to dehydrator.
Store in airtight containers, mason jars, or vacuum-sealed bags.
Keep in a cool, dark place for best shelf life.