The top isn't a mess of food. This is largely dependent on what you cook. Fish skin sometimes gets cooked on, glaze bubbles and chars, oil lights on fire and the top surface chars. Something like shrimp, tomato, or sausage will be fairly clean though, and nothing will cook on to the top.
Impairment of language, usually caused by left hemisphere damage either to Broca's area (impairment speaking) or Wernicke's area (impairing understanding, damage in rear parietal/temporal region in the left hemisphere)
Speech and language are mainly attributed to parts of the cerebral cortex, which is one portion of the telencephalon. Motor portions of language are attributed to Broca's area within the frontal lobe. Speech comprehension is attributed to Wernicke's area which lies at the temporal-parietal lobe junction.