The better inner pot material for rice cookers is generally considered to be ceramic. Ceramic pots are known for their non-stick properties, even heat distribution, and durability. According to a study published in the Journal of Food Science, ceramic pots can retain more moisture and nutrients compared to stainless steel pots, leading to better-tasting rice. Additionally, ceramic pots are more resistant to corrosion and do not impart any metallic flavors into the rice, which is a common issue with stainless steel pots. This is particularly important for maintaining the natural flavor of the rice and other ingredients.