Reply To: Is Quinoa Considered Chometz?

Most kitniyos are able to easily be made into “flour” and there was probably a concern it could be confused with real flour, and the real flour could be inadvertently used on Pesach. To avoid that potential scenario, any vegetable flour that resembled grain flour, was assered by Ashkenazic rabbonim. They wanted to asser potatoes also, but would have had a major rebellion in the Jewish community had they assered such a dietary staple.