The book covers Introduction, Onion Cultivation, Onion Dehydration, Process of Onion Dehydration, Effect of Process Parameters of Osmotic Dehydration of Summer Onion, Onion Flakes, Homemade Onion Flakes, Gamma Irradiation Improved the Quality of Onion Flakes, Onion Powder Technology, Uses for Onion Powder, Onion Seed Production Techniques, Process of Producing Large Dehydrated Onion Pieces, Process for Controlling the Pinking of Onions, Drying Technologies, Infrared Drying of Onion, Microwave Drying of Onion Slices, Process Optimisation of Vacuum Drying of Onion Slices, Process of Vacuum Treating Onions, Apparatus for Peeling Skins Off the bulbs of Onions, Magnetic Driven Onion Peeler, Flavoring Material Prepared from Onions, Pyruvate Enriched Onion Extract, Onion Extract for Treating Damaged Skin Tissue, Onions with High Storage Ability, Packaging of Onion Products, Onion Waste treatment, Plant Economics of Onion and Garlic Powder with Grape Dehydration (Raisins), Plant Economics of Onion Dehydration, Plant Economics of Onion, Garlics and Ginger Dehydration Plant, Plant Economic of Potato and Onion Flakes.