What do they wrap Cuban cigars in?

The traditional Cuban wrapper tobacco is Corojo. There was a strain called Habana 2000, which the Cubans spent years and millions of pesos developing. It's a cross between Corojo and a Cuban cigarette tobacco. Unfortunately, no one in Cuba could figure out how to cure it properly so they've gone back to Corojo. In Nicaragua, they've learned to cure it (the fermentation is different) and it's getting popular on Nicaraguan cigars.