to akuperma
huh? you mean you -were- referring to chometz?!!
There was never any question as to whether potatoes where chometz.
There were those like the chayeh odom, who takes it for granted,
that potatoes are kitniyos. To prove his point that kitnyos may be declared permissible during a famine (not to prove potatoes kitnyos), he cites an example where a place decided to permit potatoes for that year!