Wine Arcana

Region

Castelli di Jesi

The Castelli di Jesi are the hill towns and surrounding wine country of the Esino valley in Marche, central Italy. The area's principal white grape is Verdicchio, which supplies fresh still wines, longer-matured whites, sparkling wines, and sweet passito. Most vineyards lie in the province of Ancona, with part of the production area extending into Macerata.

The hills spread inland from the Adriatic toward the Apennines. This gives growers a broad range of elevations, exposures, and degrees of maritime influence. Wines can combine a citrus and floral character with substantial texture and a slightly bitter, almond-like finish.

An open valley and its hills

The Esino provides a geographical thread through the region. Settlements such as Cupramontana, Montecarotto, and Staffolo occupy the surrounding hills, with vineyards on slopes facing different directions. Sea breezes moderate parts of the area, while higher inland ground experiences cooler conditions.

Soils vary along this progression. Marly and clay-rich materials and limestone occur toward the Apennines; sandstone and mixed clay soils appear farther down the hills, with sand more prominent toward the coast. Soil depth and texture affect drainage and the water available to vines during summer. Aspect then changes the sunlight reaching the canopy and fruit.

A useful comparison is inland Matelica, where mountain ridges shelter the vineyard valley from much of the Adriatic's influence. The Jesi area includes a wider transition between maritime and inland conditions. The individual slope and vintage determine how strongly either influence is expressed.

Verdicchio through the harvest

Verdicchio retains enough acidity to support several harvest and winemaking choices. Earlier-picked fruit can give lighter wines with a sharper outline. Longer ripening can develop greater weight and riper fruit, provided that the acidity remains in balance. Producers seeking sparkling base wine or a concentrated still white consequently work toward different harvest targets.

Umani Ronchi's Casal di Serra provides a concrete example of the latter. The producer sources Verdicchio from slopes on both sides of the Esino valley, at roughly 200–350 metres, with deep, moderately calcareous clay-loam soils. Its usual harvest runs from late September into early October. The estate tracks sugar, acidity, and phenolic maturity together when choosing the date.

The cellar extends those decisions. Casal di Serra ferments in stainless steel with temperature control, avoids malolactic fermentation, and spends about five months on its yeast sediment. Keeping malic acid helps preserve acidity, while lees contact contributes to texture. The resulting combination of freshness and substance offers one approach to a fuller Verdicchio.

The denominations

Verdicchio dei Castelli di Jesi DOC requires at least 85% Verdicchio under the specification amended on 23 September 2025. Other eligible white grapes may supply the remainder. The DOC includes still wine, spumante, spumante riserva, and passito, as well as Superiore, Classico, and Classico Superiore categories.1. Italian Ministry of Agriculture, Verdicchio dei Castelli di Jesi DOC specification, amended 23 September 2025, articles 1–3; accessed 11 September 2026.

Classico identifies the delimited historic production zone. Superiore adds stricter production requirements and can accompany either the broader DOC origin or Classico. Castelli di Jesi Verdicchio Riserva is a separate DOCG, allowing Classico for eligible origins. Its specification requires at least eighteen months of ageing, including six in bottle.2. Italian Ministry of Agriculture, Castelli di Jesi Verdicchio Riserva DOCG specification, amended 23 September 2025, articles 1 and 5; accessed 11 September 2026.

These longer-matured wines give Verdicchio time to develop beyond its early fruit aromas. Some producers use wood; others build texture through tank maturation and lees. Passito takes a different path, concentrating selected grapes through drying and retaining sweetness in the finished wine. Acidity provides continuity across this range, balancing both a ripe dry white's body and a sweet wine's sugar.

Sources