Truffle Dining in Siena

---

Almost every English-language guide to Tuscan truffles prints a season that stopped being law in 2023. Tuscany rewrote its truffle statute that August, and the white truffle's harvest now opens on 1 October, not 10 September. If a Siena menu offers you fresh white truffle in the third week of September, something is wrong — and it is worth knowing what.

Truffle is the most misrepresented ingredient on any Italian menu, and Siena is a good place to understand why. The Crete Senesi to the south-east are among Italy's most productive grounds for the prized white truffle. The city is forty minutes from them. And yet a great deal of what gets served in Siena as "truffle" has never been near one.

This is a guide to eating it properly: when the seasons actually run, which truffle you are actually being sold, what it should cost, and the one address in the city where truffle is the point rather than the garnish.

The seasons, under the law as it now stands

Tuscany's truffle regime is set by regional law 36 of 2 August 2023, with an implementing regulation in force since January 2025. Its Article 8 fixes the harvest calendar, and these are the dates that matter:

There is also a fermo ecologico — a closed period in May and throughout September, when no truffle of any species may be searched for or harvested in Tuscany.

Two consequences follow, and they are the useful part.

The white truffle season is October to mid-January. Not September. The old Tuscan calendar opened on 10 September and it is still published on tourism sites, food blogs, and — remarkably — on the pages of some Tuscan comuni that cite the 2023 law in one paragraph and print the superseded dates in the next. The Region had to issue a public notice in August 2025 correcting it.

Trading a fresh truffle out of season is illegal, not merely unusual. The national truffle law of 1985 says so in terms: no commerce in any fresh species during the period when its harvest is closed. So a September menu in Siena advertising fresh white truffle is offering something imported, something that is not magnatum, or something that is not fresh.

Four different truffles wear the same word

This is where most of the disappointment comes from. "Truffle" on a Sienese menu can mean any of four things, worth radically different money.

The white truffle, Tuber magnatum, is the one people mean. It is never cooked — it is shaved raw over something warm and fatty at the last possible moment, and its aroma is gone within minutes. October to mid-January.

The black winter truffle, melanosporum, is a genuinely great ingredient with a different logic: it stands up to heat and works cooked into a sauce. Mid-November to mid-March.

The scorzone, the summer truffle, is the cheapest by an order of magnitude and is what a June or July "fresh truffle" dish in Siena is almost certainly built on. Perfectly honest, and not the thing anyone thinks they are paying for.

The marzuolo or bianchetto appears from mid-January to mid-April, is pale, garlicky and forceful, and has its own festival in the Crete Senesi each March.

A restaurant serving scorzone in July and calling it "fresh truffle" has told you the truth. Whether it has told you the useful truth is a different question, and the answer is on the price.

What it costs, and why one number is always wrong

There is no official truffle price list for the province of Siena — the Camera di Commercio's weekly Siena bulletin covers cereals, livestock, oil, wine and grapes, but not truffle. The institutional price series are Piedmontese, and they are the honest benchmark.

In the 2025 season, the Borsa Nazionale del Tartufo quoted Tuber magnatum at €1,800–2,700 a kilo for small pieces and €2,800–3,600 for pieces of 50–100 grams in early November — then €1,200–2,500 by early December, a fall of roughly a third in five weeks. Those are prices paid to the hunter; the Alba market quotation for medium truffles at the same peak was around €5,000 a kilo.

So: prices move weekly, they are set by piece size as much as by weight, and any guide quoting a single figure for "the price of white truffle" is describing one day of one season.

The number that matters at a table is smaller and more useful. At €1,800–5,000 a kilo, a five-gram shaving is nine to twenty-five euros of raw ingredient. A plate of tagliolini "al tartufo" at twelve euros is not fresh white truffle, and cannot be. When you see a fresh-truffle primo at €22 to €24, the arithmetic is at least consistent.

Where to eat it in Siena

Tar-Tufo — Via del Sole 6/A

The one address in the city where truffle is the proposition rather than a flourish, and the only one that publishes enough to check.

Its current menu carries nine dishes built on fresh truffle out of nineteen — a pheasant terrine with Vin Santo and truffle at €18, tagliolini with Bagoss fondue, Mazara red prawn and truffle at €24, an Acquerello risotto with Cinta Senese ragù and truffle at €23, three cuts of Chianina with truffle at €30. There is a five-course truffle tasting menu at €80, alongside a vegetal menu at €60 and a seven-course at €90. The kitchen serves a seasonal card, there is a sommelier's list, and the terrace looks over the city.

Open daily except Wednesday, 12.00–14.30 and 19.00–22.30.

The prices are the point. They are internally consistent with what fresh truffle costs, which is the single most reliable test a diner can apply anywhere.

Ristorante Il Tufo — Il Campo 15

Truffle appears on the Campo itself, at the restaurant we profile at number 15 — an egg dish with purple-potato mousse and truffle, a pacchero with pistachio cream, truffle and pecorino, and a signature pizza with porcini, venison salami and truffle. It is a ristorante and pizzeria with a bar, open from half past eight in the morning until one, which tells you what kind of address it is: a genuinely useful one on a square where most options are not, rather than a truffle destination.

The menu is served through an external link and publishes no prices, and it does not state whether the truffle is fresh or a truffle product. Ask. Our profile: Ristorante Il Tufo.

A correction we owe our own notes

Our earlier keyword mapping listed L'Orto & un Quarto as a Sienese truffle address. Having read its current published menu in full, that is wrong: the restaurant is a serious ristorante naturale on Strada di Montalbuccio with its own garden and unusually good vegetarian cooking — and not one truffle dish on the card. It is a fine restaurant. It is not a truffle restaurant, and we should not have implied otherwise.

How not to be sold a flavouring

Italian law is precise about selling truffle and silent about serving it. That gap is where most of the problem lives.

At a market stall or a shop, the 1985 law requires the price card to name the species in Latin and Italian and to state the zone of collection. Whole truffles must be kept separate from broken pieces. A seller who cannot show you that card is trading outside the law, and you should walk.

In a restaurant, no such duty exists. Nothing compels a kitchen to declare the species, the origin, or whether the "truffle" in a dish is fresh at all. Your protections are the calendar, the price and your own eyes.

On truffle oil: it is, overwhelmingly, not made from truffles. The aroma comes from 2,4-dithiapentane, a compound that does occur in real truffle and is industrially synthesised as a flavouring. That is legal and it is not a scandal — but under EU flavouring rules a product may only be labelled a natural truffle flavouring if at least 95% of the flavouring component actually comes from truffle, and most does not. Truffle oil, truffle butter, truffle honey and truffle salami are products in their own right. They are not the ingredient, and their single insistent note is the opposite of what fresh truffle does, which is to be complicated and then disappear.

Four questions worth asking, none of them rude:

Which species, and where from? Fresh or preserved? May I see it? And — if it is October — is it magnatum?

The good places enjoy these questions. That is itself the test.

The Crete Senesi, and going to the source

The white-truffle ground that supplies Siena is around San Giovanni d'Asso, in the Crete Senesi south-east of the city — some thirty hectares of natural truffle ground, and among the most productive in Italy for magnatum.

Two things to get right about it.

San Giovanni d'Asso is no longer a comune. It merged into the Comune di Montalcino on 1 January 2017, and is now a frazione. Addresses are Montalcino.

The truffle museum is closed. The Museo del Tartufo in the Castello di San Giovanni d'Asso — Italy's first museum devoted to the truffle — is shut for refurbishment and re-display. Montalcino approved the executive works project in May 2026, funded at around €256,000, and no reopening date has been published. Guides still sending readers there are sending them to a locked door.

The fair, however, runs. The Mostra Mercato del Tartufo Bianco delle Crete Senesi is held on the second and third weekends of November, organised by the local Pro Loco with the Associazione Tartufai Senesi under the Comune di Montalcino. The 2025 edition was the thirty-ninth, on 8–9 and 14–16 November. The 2026 dates had not been announced when we wrote this — on the standing rule they would fall on the weekends of 7–8 and 14–15 November, but that is an inference and worth a call to the Pro Loco before you book anything around it.

The same organisers run a marzuolo fair in March and a scorzone festival in June, which between them tell you more about the local truffle economy than the November crowds do.

And one to avoid confusing: San Miniato is not Siena. Its national white-truffle fair is excellent, runs three weekends rather than two, and sits in the province of Pisa, roughly seventy-five kilometres away. It belongs in a different itinerary.

Practical Information

White truffle season in Tuscany: 1 October – 15 January (Tuber magnatum), under regional law 36/2023. Black winter truffle 15 Nov – 15 Mar; scorzone 1 Jun – 31 Aug and 1 Oct – 30 Nov; marzuolo 15 Jan – 15 Apr. Closed period in May and September. Trading fresh truffle out of season is prohibited under the national law of 1985. Prices (2025 season, Piedmontese institutional quotations): magnatum roughly €1,800–3,600/kg to the hunter at the early-November peak, falling by about a third by December; c. €5,000/kg at market. A 5g shaving is €9–25 of raw cost. Tar-Tufo, Via del Sole 6/A, Siena — nine fresh-truffle dishes on the current card; truffle tasting menu €80, seven-course €90. Daily except Wednesday, 12.00–14.30 and 19.00–22.30. Ristorante Il Tufo, Il Campo 15 — truffle dishes on the menu; no published prices, provenance not stated. At a stall: by law the price card must give the species in Latin and Italian and the collection zone. In a restaurant, no equivalent duty exists. Truffle oil is almost always synthetic 2,4-dithiapentane, and may only be called a natural truffle flavouring if 95% of the flavouring comes from truffle. Mostra Mercato del Tartufo Bianco delle Crete Senesi: second and third weekends of November, San Giovanni d'Asso (Comune di Montalcino). 2026 dates unannounced at the time of writing. Museo del Tartufo: closed for refurbishment; no reopening date published.

Continue Reading

• Truffle Hunting in Tuscany
• The Best Restaurants in Siena
• Where Locals Eat in Siena

Frequently Asked Questions

When is white truffle season in Tuscany? 1 October to 15 January, under Tuscan regional law 36 of 2023. Many guides still print the old calendar, which opened on 10 September — the Region issued a public notice in 2025 correcting exactly that error. There is also a closed period covering all of May and September, when no truffle may be harvested at all.

Where can I eat truffle in Siena? Tar-Tufo on Via del Sole is the city's truffle restaurant proper, with nine fresh-truffle dishes on its current card and a dedicated truffle tasting menu at €80. Truffle also appears on the menu at Ristorante Il Tufo on Piazza del Campo, though provenance is not stated there.

How much does white truffle cost? There is no single figure. In the 2025 season Italian institutional quotations ran from roughly €1,800 to €3,600 a kilo to the hunter at the early-November peak, falling about a third by December, with market prices around €5,000. Prices are set by piece size as much as by weight and move weekly.

How do I know if truffle on a menu is real? Check the calendar, the price and your eyes. Fresh white truffle outside 1 October to 15 January cannot legally be traded fresh in Italy. A five-gram shaving costs €9–25 in raw ingredient, so a twelve-euro truffle pasta is not fresh white truffle. And it should be shaved at the table from a whole truffle you can see.

Is truffle oil made from truffles? Almost never. The aroma is 2,4-dithiapentane, a compound found in real truffle but industrially synthesised as a flavouring. It is legal and clearly labelled when done properly, but it is a flavouring rather than the ingredient — one insistent note where real truffle is complex and fades within minutes.

Is the truffle museum at San Giovanni d'Asso open? No. It is closed for refurbishment and re-display, and although Montalcino approved the works project in May 2026, no reopening date has been published. The November truffle fair in the same village does still run, on the second and third weekends of the month.

By the Siena & Toscana editors