@Shlomo There is blistering on the thicker side of the cob, indicating that portion was cooked by the dry head of the side of the grill, but notice which part doesn't touch her palm: the blistered side. Lastly, if the portion of the grill were so hot as to make the cob unbearable to touch, you would see heat distortion directly above the grill. Notice the only smoke is away from where their fingers are; hot coals are on one side only for cooking the other side keeps things warm.