Clean a rice cooker's inner lid and steam vent safely
Unplug and cool the cooker, detach only designated washable parts and dry them before refitting.
Rice starch can collect around the inner lid and steam vent. Zojirushi's maintenance guide recommends cleaning removable inner lids and thoroughly drying them, while noting that only some steam vents can be disassembled. Never immerse the powered body or dismantle pressure-safety components.