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)
Broca's area. - aka motor speech. - is located in most individuals within the inferolateral portion of the left frontal lobe. - This region is responsible for regulating the patterns of breathing and controlling the muscular movements necessary for vocalization. - Controls language expression - an area of the frontal lobe, usually in the left hemisphere, that directs the muscle movements involved in speech.