What is "savatiano"

Savatiano is a white Greek wine grape used primarily in the wine Retsina. It is one of Greece's most widely planted grape varieties and is known for its resistance to drought condition. It is mostly planted throughout central Greece, particularly in Attica near Athens. In Retsina, the naturally low acidity of the grape is sometimes compensated for by the addition of Assyrtiko and Rhoditis in the blend.