The phrase "sell like hot cakes" is a simile for how quick something is selling. That said, the meaning of "hot cake" is apparently a synonym of pancakes, or before pancakes, corn griddle cake and other varieties. Dictionary.com lists the date of origin dating back to 1839, where it first appeared.
That said, I'm wonder what's so "hot" about hot cakes? Was the time period in 1839 a period in which "hot cakes" were all the rage? Is there something about hot cakes that made them so popular that the phrase was coined?
I'm looking for the etymology of such a phrase.