Dried Onion Flakes are dehydrated pieces of onion that have been processed to remove their moisture content, resulting in a lightweight, shelf-stable product. They are typically made by slicing or dicing fresh onions, which are then dried using methods like air-drying, freeze-drying, or oven-drying. The flakes retain much of the onion’s flavor, though it is more concentrated and slightly milder compared to fresh onions.