Dehydrators are versatile and can handle fruits (e.g., apples, bananas), vegetables (e.g., carrots, kale), meats (for jerky), herbs, and even flowers for crafts or tea. Avoid high-fat foods like avocados or fatty meats, as fats can spoil quickly.

Food should be leathery or crisp (not sticky) with no moisture inside. Test by cooling a piece and checking for flexibility. For fruits, place a cooled piece in a sealed jar; if condensation appears, it needs more drying.

Yes, but ensure they have similar drying times and temperatures. Strong-flavored foods (e.g., onions) may transfer odors, so separate them if possible.