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Chestermiller
#3
Dec29-12, 01:19 AM
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The physical size of a cake is much larger than the physical size of a potato. Maybe the skewers will be able to conduct enough heat into the middle of the potato, but they will be problematic with a cake. Most of the heat that is being conducted along the skewers will be released closer to the surface of the cake because of its larger size. So they might help a little, but probably not much. But there are ways of analyzing the unsteady state heat conduction problem involved in heating a food item from the outside to the inside in an oven. See Bird, Stewart, and Lightfoot for a discussion of heating turkeys of various sizes. Of course, the simple answer is to bake the cake at a lower temperature for a longer amount of time.