Lyophilization (freeze-drying)

Whole-food or extract-based products preserved by freeze-drying (lyophilization) specifically to retain a functional bioactive payload rather than just shelf life — Four Sigmatic's adaptogenic mushroom coffee and creamers, Natierra's organic freeze-dried fruit, Om Mushroom Superfood's mushroom powders, and Ancient Nutrition's freeze-dried bone broth protein — distinct from conventional frozen or air-dried snack foods where the preservation method is chosen for cost rather than bioactive retention.