Wiki How to Make Vegetable Powders

You can use vegetable powders to:

Put more nutrition and flavor into the things you cook. Provide value-added thickening for soups (as opposed to using wheat flour or cornstarch for this job). Stretch your grocery dollar by (a) powdering less-expensive vegetables that may not be so popular with your family, but are nevertheless nutritious, and (b) making use of all your clean, uncooked leftovers, including the trimmings.