Hi,
I've just joined this forum, nice to meet you.
I've searched the rice cooker without aluminum pot you want and found a candicate from Hitachi.
Z-ＧX180J (The following site is written in Japanese although...)
http://www.hitachi.co.jp/environment...7YT-07-16.html
It has iron pot instead of aluminum one. The concept is to simulate the old Kamado style. It says that the iron pot make rice tasty evenly with plump.
I have never tried this one, but it looks nice.
Cheers,
Fumizo