Homemade, grain-free starches and flours

In the last few years, I've reacted to all processed starch that I've purchased. I know of other sulfite-sensitive folks who have said the same, as well as some super-sensitive celiacs, and some folks who have to be corn or grain free.

If you need a starch, however, and you can have either sweet potato or potato, there's a really easy way to make your own sweet potato or potato starch. This method leaves you with remainders from the process that you can turn into sweet potato flour or potato flour, too!