Clean and cut vegetables into small pieces - the same size you would prep if you were making this fresh.
Place onto dehydrator trays in separate layers. They dry at different rates.
Dry at 125°F / 52°C for 6-12 hours
Store in airtight containers
In bulk:The typical ratio is 2:1:1 onion to celery to carrot. But you can do the mixture however you like for your own meals.To store: Store in airtight containers separately or together. To Powder: Put your ingredients into a bullet blender or large blender and pulse until a powder begins to form, then on high until fully powdered. Store in an airtight container with a desiccant pack if desired.