(Reuters) - Can the latest fad for wine enthusiasts possibly come from an eastern European country whose wine-growing traditions are as old as Christianity? Romania is the sixth-largest wine grower in the European Union and its enthusiastic proponents say the aspect of its 180,000 hectares of vineyards, unique soil, unusual grapes and inexpensive costs make it a producer to watch. "What is unique about Romania is certainly the soils that can give unique characteristics to the wine," said Stephen Donnelly, oenologist of the Budureasca vineyard some 90 km northeast of capital Bucharest.