Fill your sink with hot water and several squirts of liquid dish soap.
Place ceramic items in the hot, soapy water to soak. If the surface is too large to place in a sink, fill a spray bottle with hot, soapy water and spray it onto the burnt residue. Allow soaking to continue for one hour.
Wet a nylon scrub pad and dip it into baking soda to coat it.
Scrub away the burnt-on food with the nylon scrub pad.
Rinse the area and dry it with a lint free cloth.