Boza...*shudder*.  It tastes like fake sugar foremost.  Then thick sludgy unpleasant boza taste that is yes, indescribable.

Supposedly, back in the past it was made fresh daily and could be procured at various cafes and other restaurants.  My husband says the bottled kind they have now is nothing like fresh boza.  There are recipes online to make it at home, though I think they would make the average American think twice about trying to make it.

http://www.omda.bg/engl/cook/boza.htm  There's one that is less icky sounding than some others I've found.

Make sure she gets tikvenik banitsa, meatball soup, shipka marmalad, nucrema (which kicks nutella's butt), halva, turkish delight, local wine and rakia.  ;)