Cauliflower behaves like broccoli but is denser in the florets, so it runs a little longer. Riced cauliflower, either homemade or frozen, is the easiest way to dry it: small even pieces that rehydrate in minutes as a rice substitute or soup thickener.
Unblanched cauliflower tends to yellow and smell stronger in storage.
Prep and loading
- Cut into 1 inch florets or pulse into rice-size pieces.
- Blanch florets 3 minutes (riced, 1 minute), chill and drain well.
- Spread riced cauliflower about ½ inch deep, florets in a single layer.
How to tell it’s done
- Florets are dry and chalky inside; riced pieces are free-flowing.
Not sure? The weight check compares two weighings and the expected dry weight for cauliflower.
Problems and fixes
Grey or yellow color
Unblanched or old cauliflower. Blanch, and use fresh, white heads.
Rehydrating and storing
Rehydrate: Simmer 5–8 minutes. By weight, 100 g of dried cauliflower takes back about 1113 g of water to return to fresh weight; the rehydration calculator does any amount.
Store: Mylar or jar with an oxygen absorber.
Ways to use it
- Cauliflower rice
- Soups and mash
- Curries
How much fits per batch
At a normal single layer, cauliflower load at roughly 1.8 lb of fresh food per square foot of tray. That works out to:
| Machine | Fresh per batch | Dried per batch |
|---|---|---|
| Harvest Right Countertop 360 | 4.5 lb | 5.9 oz |
| Harvest Right Small | 5.4 lb | 7.2 oz |
| Harvest Right Medium | 8.4 lb | 11.1 oz |
| Harvest Right Large | 13.8 lb | 1.14 lb |
| Harvest Right X-Large | 28.1 lb | 2.32 lb |
Sources
- USDA FoodData Central: cauliflower, raw (water content)
- Utah State University Extension: Can I Freeze-Dry That? (2026)
- Penn State Extension: Let’s Preserve: Freeze-Drying
- National Center for Home Food Preservation: freezing (blanching times)
- Iowa State University Extension AnswerLine: Preserving by home freeze drying
Water content rounded from USDA FoodData Central (cauliflower, raw). Cycle times are typical ranges at default settings; thickness, load and your room change them. How we put these together.