The Glera Lunga grape variety is a variant of Glera that is part of the blend for Prosecco DOC and DOCG. Glera Lunga is a nearly unknown grape variety in the Conegliano area, while it is moderately widespread in the municipality of Valdobbiadene and in Col San Martino, in the fraction of Farra di Soligo. Only recently has it been discovered that the two varieties are very different from each other from an ampelographic and biomolecular structure perspective. Further differences were observed in the enological product, leading to the registration of the Glera Lunga variety in the National Register in 2000. The cluster of Glera Lunga is medium-sized, pyramidal, and winged. The berries are uniform in size and turn a deep yellow when ripe. The wine produced from Glera Lunga has an excellent structure with good body and acidity, featuring vegetal and spicy aromas.

Regarding the ampelographic differences between Glera and Glera Lunga, phenologically, Glera Lunga buds a few days later, while the ripening period is the same. The leaf of Glera Lunga is large, with a dark green blade. Glera Lunga has a medium-sized, truncated-pyramidal cluster, rarely winged, and moderately compact. The berry is elliptical, uniform in size, with a fairly thick, deep golden yellow skin. In contrast, the Glera cluster is larger, elongated, pyramidal, winged, with round berries, often varying in size due to millerandage, and with a thin, golden yellow skin. Glera Lunga exhibits significantly greater vigor compared to Glera.