How much of the powder do you use to make a tomato sauce?
1⁄4 cup + 1⁄2 cup water= 6 oz.tomato sauce or 3⁄4 cup tomato paste
I've used a little less water than that and it's a bit thicker.
I've got a bunch of 'pumpkin puree' that I leathered earlier this spring when I first got my dehydrator. I'm going to try powdering that (may need to re-dehydrate a bit first) for use in waffles, bread or vegetable soup stock.
This is a good primer link on veggie powders. I haven't blanched anything just yet but then again I haven't done anything that really needs it so far:
http://www.wikihow.com/Make-Vegetable-Powders