A vendor in Aqaba, Jordan makes Turkish coffee using a heated bowl of sand in afascinating video posted by Ahmad Al-Zaben. While it almost appears the coffee is somehow filling from the bottom up magically from the sand, ground coffee and water are already in the pot (called a cezve), and the hot sand heats the water to a rolling boil that reaches the top of the cezve.
Turkish coffee is made in a small copper pot called a cezve, in which water is heated over medium heat. Coffee is ground into the finest powder (much finer than home coffee mills) and added, along with any sugar, to the hot water. After a quick stir, it's brought to a boil, so as to form a thick foam or cream on top. This foam is poured into a cup, and the coffee is similarly foamed a few more times before serving. Good Turkish coffee is decadently foamy.