Freeze-dried fruit contains concentrated amounts of nutrients. Photo Credit dried fruit image by Roman A. Kozlov from Fotolia. Each 1 1/2 cups of freeze-dried okra contains 2.5 grams of protein. Each 1 1/2 cups of freeze-dried okra contains 2.5 grams of protein. A lot of people use the terms dehydrated and freeze-dried like they are the same thing. Over 1600+ freeze dried food and dehydrated foods from America’s top companies! Huge food units unmatched for price, size, variety, and nutrition! Freeze drying is a method of preserving biological material ranging from flowers to whole animals.