Bianco d'Alessano

Bianco d'Alessano is a variety of ancient and somewhat mysterious heritage. Ampelographers agree it is native to southern Italy, though its precise place of origin remains unresolved. The most widely cited hypothesis links it to the Lecce province, where the town of Alessano is located, suggesting the grape spread outward from there across Puglia and into Calabria thanks largely to its high productivity. The earliest formal documentation comes from the Bullettino Ampelografico of 1875, in which the ampelographer Frojo recorded the grape under various local synonyms across multiple Puglian provinces, including Bianco di Lassame in the Bari area, Acchianca Palamento in Ostuni, and Bianco d'Alessano itself in Carovigno. Written records from around 1870 also note its cultivation in the Martina Franca area of the Taranto province, where it was consistently grown alongside Verdeca. A landmark 2008 DNA study confirmed that Iuvarello, a grape with centuries of cultivation history in Calabria, is genetically identical to Bianco d'Alessano, significantly extending the known geographic footprint of this variety across two southern Italian regions.

• Exact origin unknown; likely native to the Lecce province, where the town of Alessano is situated
• First formally recorded in 1875 by ampelographer Frojo in the Bullettino Ampelografico under multiple synonyms
• 2008 DNA analysis confirmed that Calabria's Iuvarello grape is the same variety as Bianco d'Alessano
• Cultivation in Martina Franca documented from approximately 1870, always in close association with Verdeca

Bianco d'Alessano is a mid-to-late ripening white variety that has carved out a niche in one of Italy's most intensely sun-drenched wine regions. One of its most commercially important traits is a remarkable capacity to maintain high levels of acidity even when harvested late into the growing season, a characteristic that distinguishes it from many southern Italian white varieties that tend toward phenolic ripeness and low acidity. The vine bears medium-to-large, cylindrical-conical bunches that are fairly compact, sometimes with a wing. Berries are medium in size, spherical, with a thick, waxy, uniformly yellow skin and neutral-tasting flesh. The vine adapts well to the hilly, calcareous-siliceous, moderately deep soils typical of the Valle d'Itria and surrounding areas. It has medium vigor and is capable of abundant, regular yields. Historically, this productivity was both its chief commercial asset and, in the eyes of quality-focused winemakers, its main limitation: early observers noted that high yields came at the expense of concentration and flavor complexity. The variety is also noted for its ability to thrive in poor soils, well-suited to the dry, karst-influenced hillsides of the Valle d'Itria trulli country.

• Mid-to-late ripening; retains high natural acidity even with extended hang time in hot southern Italian conditions
• Bunches are medium-to-large, cylindrical-conical, fairly compact; berries spherical with thick, waxy yellow skin
• Thrives on hilly, calcareous-siliceous, moderately deep soils of the Valle d'Itria and Murgia plateau
• Abundantly productive, which historically worked against wine quality but is now managed through careful viticulture

In Italy, Bianco d'Alessano is rarely vinified as a varietal wine; it is almost always blended with other local white varieties, most commonly Verdeca, but also Bombino Bianco, Fiano, Greco, and Malvasia. Historically, the wines were considered neutral, pale straw-yellow, and somewhat simple, well-suited as a blending base for vermouth rather than as a fine table wine. Modern winemaking techniques, including temperature-controlled fermentation in stainless steel at around 16 to 18 degrees Celsius and careful avoidance of malolactic fermentation, have allowed producers to highlight the variety's natural freshness, acidity, and delicate aromatic profile. When vinified with care, particularly as a varietal or high-percentage expression, Bianco d'Alessano can deliver wines with straw-yellow color and greenish reflections, aromas of white flowers, pear, apple, and white peach, a creamy texture, and a clean, mineral finish. Grapes typically reach around 20 degrees Brix at harvest, with titratable acidity of 5 to 6 grams per liter and a pH of 3.4 to 3.6. Finished wines typically fall in the 11 to 13 percent alcohol range. A sparkling version also exists, notably in Locorotondo Spumante DOC.

• Almost always blended in Italy, most frequently with Verdeca; varietal examples are a more recent development
• Temperature-controlled stainless steel fermentation at 16 to 18 degrees Celsius preserves freshness and aromatic delicacy
• Malolactic fermentation is typically avoided to preserve the grape's naturally high acidity
• Typical harvest parameters: approximately 20 degrees Brix sugar, 5 to 6 g/L titratable acidity, pH 3.4 to 3.6

Bianco d'Alessano is a permitted or required blending component in five Puglian DOC appellations. Its most prominent roles are in Locorotondo DOC and Martina Franca DOC (also known simply as Martina DOC), the two flagship white wine appellations of the Valle d'Itria. In Locorotondo DOC, the blend calls for 50 to 65 percent Verdeca and 45 to 50 percent Bianco d'Alessano, with up to 5 percent of Bombino Bianco, Fiano, and Malvasia Toscana permitted. Martina Franca DOC follows a nearly identical formula: 50 to 65 percent Verdeca and 35 to 50 percent Bianco d'Alessano, with the same small allowance for Bombino Bianco, Fiano, and Malvasia Toscana. In the Gravina DOC, Bianco d'Alessano may contribute up to 30 percent of the blend alongside the dominant Greco and Malvasia. It also appears as a minor permitted variety in Ostuni DOC and Lizzano DOC. Both Locorotondo and Martina Franca produce still and sparkling Spumante versions. The grape is registered as suitable for cultivation throughout the entire Apulian viticultural territory.

• Locorotondo DOC: Verdeca 50-65%, Bianco d'Alessano 45-50%, with up to 5% Bombino Bianco, Fiano, Malvasia Toscana
• Martina Franca DOC: Verdeca 50-65%, Bianco d'Alessano 35-50%, with up to 5% Bombino Bianco, Fiano, Malvasia Toscana
• Gravina DOC: Bianco d'Alessano permitted up to 30% alongside dominant Greco (minimum 50%) and Malvasia (minimum 20%)
• Also a minor permitted variety in Ostuni DOC and Lizzano DOC; both still and Spumante styles are produced in key appellations

Outside Italy, Bianco d'Alessano has found its only meaningful foothold in the Riverland wine region of South Australia, where a small vineyard situated near the banks of the Murray River at Loxton took a chance on this obscure southern Italian variety. As of 2021, approximately 2 hectares of Bianco d'Alessano are planted in Australia, making it one of the rarest commercial plantings of any Italian variety in the Southern Hemisphere. What makes the Australian story particularly compelling is quality: the variety's trademark acidity retention holds up even in the very warm continental climate of the Riverland, a region not typically associated with finesse whites. Varietal examples from this vineyard have won multiple wine competition awards in the Alternative Variety category, including trophies for Best White, Best Italian Variety, and Best Wine of the Show. This success has sparked broader interest in Bianco d'Alessano as part of Australia's growing alternative variety movement, with potential seen for it to join Vermentino, Fiano, and Greco as emerging warm-climate white varieties of note.

• Only meaningful planting outside Italy: approximately 2 hectares in the Riverland, South Australia, near Loxton
• Varietal examples have won Australian wine show trophies in the Alternative Variety category, including Best Wine of the Show
• Acidity retention in Australia's warm continental climate mirrors the grape's performance in hot southern Puglia
• Interest growing in Australia as a candidate alongside Vermentino, Fiano, and Greco for warm-climate white wine production

Bianco d'Alessano has experienced a dramatic contraction in plantings over the past half-century. In the early 1970s, the variety occupied approximately 3,830 hectares across Puglia. By the 2010 Italian Agricultural Census, this had fallen to around 411 hectares, with roughly 67 percent of those dedicated to DOC wine production, distributed fairly equally across the provinces of Brindisi, Bari, and Taranto. Several factors drove this decline: competition from more productive varieties such as Verdeca, a general shift toward more commercially recognizable grapes, and the variety's historical reputation for neutral, low-value wine suited mainly to bulk blending and vermouth production. In the 1940s, plantings already lost ground to more profitable crops, though a temporary revival occurred in the 1950s when demand for neutral base wines was strong. Today, a modest but meaningful revival is underway, driven by renewed interest in indigenous southern Italian varieties and by a small number of producers choosing to vinify Bianco d'Alessano as a varietal wine, showcasing its freshness, mineral character, and food-friendliness in a way that bulk blending never could.

• Plantings fell from approximately 3,830 hectares in the early 1970s to just 411 hectares by the 2010 Census
• Decline driven by competition from Verdeca and other varieties, and the grape's historical reputation for neutral, bulk-blending wines
• About 67% of current plantings in Puglia are dedicated to DOC wine production, spread across Brindisi, Bari, and Taranto provinces
• A modest revival is underway, with growing interest in varietal expressions and indigenous Puglian white grape varieties