The “petite” in the name of this grape refers to the size of its berries and not the vine, which is particularly vigorous. The leaves are large, with a bright green upper surface and paler green lower surface. The grape forms tightly packed clusters. The small berries create a high skin to juice ratio, which can produce very tannic wines if the juice goes through an extended maceration period. In the presence of new oak barrels, the wine can develop an aroma of melted chocolate.
Petite Sirah produces dark, inky colored wines that are relatively acidic, with firm texture and mouth feel; the bouquet has herbal and black pepper overtones, and typically offers flavors of blue fruit, black fruit, plums, and especially blueberries. Compared to Syrah, the wine is noticeably more dark and purplish in color, and typically rounder and fuller in the mouth, and offers a brightness that Syrah lacks. The wines are very tannic, with aging ability that can exceed 20 years in the bottle.[