Tatung
Tatung's signature multi-functional cookers pair a food-grade 304 stainless inner pot with a matching 304 stainless inner lid, so the only things that touch the rice and its steam are stainless steel. The heating water sits in a separate outer pot the food never contacts, and the outer body and controls are metal and plastic outside the food path. Plastic-free food contact is a byproduct of the traditional design rather than a marketed feature, and the brand also sells conventional coated-pot cookers - so the specific stainless models are the ones to seek out.
How clear are their specs?
Manuals and spec sheets state SUS304 stainless for the inner pot and inner lid, but the brand markets on function more than materials and does not lead with a plastic-free claim.
