The process involves utilizing the controlled, low-heat environment of a standard kitchen appliance to remove moisture from fresh plant leaves. This method effectively preserves the herbs for later use in cooking, medicinal applications, or crafting. For instance, rosemary sprigs can be spread on a baking sheet and subjected to low temperatures until they become brittle and easily crumble.
This technique offers a practical solution for extending the shelf life of seasonal produce, preventing spoilage, and concentrating the flavorful oils within the plant material. Historically, drying was a fundamental method of food preservation, allowing cultures to maintain access to essential resources throughout the year. The advent of modern appliances has refined this process, making it more accessible and controllable.