Semidano

Semidano is potentially one of Italy’s great grape varieties, and roughly fifty hectares of it remain. D’Agata calls it the poster child for everything that went wrong with Italian viticulture after phylloxera and again in the oaky-white 1980s, when quality but obscure grapes were forgotten, unstudied and replaced by whatever was more productive or easier to farm.

Origins and history Known locally as Laconarzu, Mizu, Migiu and Semidamu, Semidano is thought to have been one of the many vines brought to Sardinia by the Phoenicians, a claim that is admittedly hard to prove. It has always been co-planted with Nuragus, with which it shares a long common history in the island’s vineyards. Recent SSR testing at twelve loci found it separate from every other Sardinian variety, though closely related to the little-known Lacconargeddu.

Why it nearly vanished Semidano is less resistant than Nuragus to both phylloxera and oidium, and when growers replanted they naturally chose the hardier of the two. That alone would have been enough, but Semidano compounded the problem with greatly variable yields from year to year, which is the single quality farmers can least afford. A grape can be excellent and still lose, and this one very nearly did.

Where it survives The remaining plantings sit mainly around Cagliari. The DOC is Sardegna Semidano, and the Mogoro subzone is the best of it, with wines carrying that subdenomination required to come from lower yields, 110 quintals per hectare against 130. That difference is modest on paper and decisive in the glass, and it is the clearest signal of where to look.

In the vineyard The variety’s disease sensitivity means it demands more attention than its neighbours, particularly to oidium, and its irregular cropping makes planning difficult. It rewards the trouble with fruit of unusual finesse. Because it has so long been interplanted with Nuragus, a good deal of what is picked as Semidano has historically gone into Nuragus blends without anyone distinguishing it.

Appearance and structure As a monovarietal, Semidano is a beautifully graceful, lightly aromatic wine of genuine refinement. It is not weighty and does not aim to be; its quality lies in the precision of its aromatics and the mineral line that runs beneath them. This is a white built on elegance rather than concentration.

Aromatic profile Tangerine and apricot dominate, over strong mineral notes that give the wine its length and seriousness. The aromatic character is delicate rather than emphatic, closer to a restrained Muscat relative than to anything overtly perfumed. Where yields climb, that precision is the first thing lost.

In the cellar Sardegna Semidano can be made still, spumante or passito, and the sweet air-dried version deserves more attention than it gets. The grape is also blended into Nuragus, where it adds elegance and refinement to a wine that can otherwise be plain. Stainless steel suits the dry wines, which need nothing added to them.

Key expressions

• Sardegna Semidano di Mogoro, the best subzone, made from lower yields.
• Monovarietal still whites from the Cagliari plantings.
• Passito versions from air-dried grapes.
• Spumante bottlings, still a rarity.

The question of aging The dry wines hold four to six years well, the tangerine fruit softening while the mineral backbone stays firm, and the best Mogoro bottlings go longer. Given how little is made, most bottles are drunk long before this is tested. The passiti will last for many years.

At the table Its refinement and mineral finish suit the island’s seafood, particularly grilled fish, shellfish and bottarga, and it is elegant enough for delicate preparations that heavier whites would overwhelm. The passito belongs with almond sweets and aged cheese. Serve the dry wines around ten degrees.

Why it matters Semidano is the answer to the claim that Italy’s native grapes are not that interesting after all. It is a variety of real quality reduced to fifty hectares not because the wine failed but because the vine was harder to farm than the one growing beside it. Every argument for taking obscure varieties seriously is contained in this one grape.