Blue Electric Kettle

To remove discoloration or scale/lime deposit from heating element:

Place either 1/2 teaspoon cream of tartar or 1 Tablespoon white vinegar or lemon juice into the kettle. Then fill the kettle 1/2 full with water. Plug in, turn ON (|) and bring to boil. Turn OFF (0), let cool, and rinse several times with clean tap water.