Air-drying herbs turns basil black and cilantro flavorless. Freeze-drying works at low temperatures, so the leaves stay green and much of the aroma stays with them. It is one of the clearest quality wins a freeze dryer has over a dehydrator.
Herbs are so light that a full tray barely registers on the scale. They are a good batch to share a tray with something else, as long as the other food doesn’t have a strong smell.
Prep and loading
- Rinse and spin completely dry.
- Strip leaves from woody stems. Chop chives into short lengths.
- Pile loosely to the tray rim. Do not pack them down.
- Avoid drying herbs alongside onions or fish; they pick up odors.
How to tell it’s done
- Leaves crumble to flakes between your fingers.
Not sure? The weight check compares two weighings and the expected dry weight for herbs.
Problems and fixes
Flavor faded fast
Light and air. Store in small dark jars with an absorber and crumble only when using.
Rehydrating and storing
Rehydrate: Add dry to cooking; no soak needed. By weight, 100 g of dried herbs takes back about 1113 g of water to return to fresh weight; the rehydration calculator does any amount.
Store: Small airtight jars with oxygen absorbers, away from light.
Ways to use it
- Cooking and sauces
- Herb salts and rubs
- Tea from mint and lemon balm
- Pesto powder for pasta
How much fits per batch
At a normal single layer, herbs load at roughly 0.5 lb of fresh food per square foot of tray. That works out to:
| Machine | Fresh per batch | Dried per batch |
|---|---|---|
| Harvest Right Countertop 360 | 1.2 lb | 1.6 oz |
| Harvest Right Small | 1.5 lb | 2.0 oz |
| Harvest Right Medium | 2.3 lb | 3.1 oz |
| Harvest Right Large | 3.8 lb | 5.1 oz |
| Harvest Right X-Large | 7.8 lb | 10.3 oz |
Sources
- USDA FoodData Central: basil, fresh (water content)
- Utah State University Extension: Can I Freeze-Dry That? (2026)
- Penn State Extension: Let’s Preserve: Freeze-Drying
- Iowa State University Extension AnswerLine: Preserving by home freeze drying
Water content rounded from USDA FoodData Central (basil, fresh). Cycle times are typical ranges at default settings; thickness, load and your room change them. How we put these together.