Freeze Dry Math

Vegetables

How to freeze-dry broccoli

Broccoli florets freeze-dry crisp and keep their color. Cut stems smaller than florets, and blanch for better flavor in storage.

Close-up of fresh, green broccoli florets
Broccoli. Photo: Tim Mossholder on Unsplash
Batch card · BroccoliGood
VerdictWorks with the right prep.
PrepSmall florets, blanch 3 min
Typical cycle20–30 h
Water contentabout 89%
1 lb fresh becomes1.8 oz dried
Eat straight from the bag?Yes

Broccoli has two parts that dry at different speeds: the airy florets and the dense stem. Cutting florets small with only a short stem, and dicing the thick stems separately, keeps the whole tray finishing at the same time.

Dried broccoli is surprisingly good as a crunchy snack with a sprinkle of salt, and it rehydrates well in soups and casseroles.

Prep and loading

  1. Cut into 1 inch florets; split thick stems lengthwise. Dice the main stalk ⅜ inch.
  2. Blanch florets for 3 minutes, chill and drain thoroughly.
  3. Spread loosely; broccoli is bulky and light.
  4. Frozen florets work straight from the bag; halve big ones.

How to tell it’s dry

  • Stems snap rather than bend.
  • Florets crumble when crushed.

A steady weight only shows the drying has stopped; breaking the thickest piece is the check that counts. Neither is a safety test. Safety comes from tested prep, safe cooking temperatures where needed, complete drying and airtight packing. See what a kitchen scale can and cannot tell you.

Not sure? The weight check compares two weighings and the expected dry weight for broccoli.

Problems and fixes

Stems still bendy

Pieces with thick stems. Add a few hours and trim stems shorter next time.

Strong smell in the bag

Brassicas smell sulfurous when concentrated. Blanching reduces it.

Rehydrating and storing

Rehydrate: Steam or simmer 5 minutes. By weight, 100 g of dried broccoli takes back about 782 g of water to return to fresh weight; the rehydration calculator does any amount.

Store: Mylar or jar with an oxygen absorber. Florets crush; a rigid container keeps them whole.

Ways to use it

  • Broccoli cheddar soup
  • Casseroles
  • Salted snack
  • Pasta dishes

How much fits per batch

At a normal single layer, broccoli load at roughly 1.6 lb of fresh food per square foot of tray. That works out to:

MachineFresh per batchDried per batch
Harvest Right Countertop 3604.0 lb7.2 oz
Harvest Right Small4.8 lb8.7 oz
Harvest Right Medium7.5 lb13.6 oz
Harvest Right Large12.3 lb1.39 lb
Harvest Right X-Large25.0 lb2.84 lb

Sources

  1. USDA FoodData Central: broccoli, raw (water content)
  2. Utah State University Extension: Can I Freeze-Dry That? (2026)
  3. Penn State Extension: Let’s Preserve: Freeze-Drying
  4. National Center for Home Food Preservation: freezing (blanching times)
  5. Iowa State University Extension AnswerLine: Preserving by home freeze drying

Water content rounded from USDA FoodData Central (broccoli, raw). Cycle times are typical ranges at default settings; thickness, load and your room change them. How we put these together.