Grechetto, strictly Grechetto di Orvieto, sometimes Greghetto, characterful central Italian white grape variety most closely associated with umbria. It is an ingredient in orvieto and in the whites of torgiano and the Colli Martani doc, typically blended with Trebbiano Toscano and Verdello. The grapes’ thick skins provide good resistance to downy mildew. Grechetto di Todi is a synonym for pignoletto and dna profiling suggests a parent–offspring relationship between the two Grechettos. Several DOC regulations specify simply ‘Grechetto’. There were over 1,500 ha/3,750 acres of ‘Grechetto Bianco’ in the 2010 vine census (and 500 ha of Pignoletto).