Balsamic Vinegar

Real balsamic vinegar, Aceto Balsamico Tradizionale, is made from one ingredient: grape must, cooked slowly over an open flame until it loses a third to a half of its volume, then fermented, acidified, and aged a minimum of twelve years in a graduated set of wooden barrels. No wine vinegar, no caramel, no thickeners. It pours like a light syrup and tastes sweet before it tastes sour.

Two protected designations exist, both granted DOP status by the EU in 2000: Aceto Balsamico Tradizionale di Modena and Aceto Balsamico Tradizionale di Reggio Emilia. Modena grades as Affinato (twelve years minimum) and Extravecchio (twenty-five). Reggio Emilia uses coloured capsules instead, lobster, silver and gold, for ascending age and concentration.

What almost every bottle sold outside Italy contains is a different thing entirely: Aceto Balsamico di Modena IGP, an industrial condiment made by blending cooked or concentrated grape must with wine vinegar, with up to 2% caramel colouring permitted and a minimum ageing requirement of sixty days. It is a perfectly reasonable cooking ingredient. It is not the same product, and the label does very little to tell you so. The third category, condimento, is not a designation but a gap: some of the best-value balsamic on the market is sold that way, and so is some of the worst. Only the ingredients list separates them.

Traditional balsamic is dense and glossy, and the first thing it does is taste sweet: dried fig, prune, cooked cherry, a hint of molasses. The acidity arrives second, as a lift rather than a sting, and the finish runs long on wood and something faintly resinous from the juniper barrel. It should never burn the throat.

At twelve years it is bright and fruit-forward with a clear acetic backbone. At twenty-five it is thicker, darker and quieter, more like a very old fortified wine reduced to syrup: the fruit turns to tar and liquorice and the acidity almost disappears under the concentration.

Supermarket balsamic is easy to identify once you know: the sourness comes first and hits the throat, the sweetness is flat because it comes from a small percentage of must rather than from years of evaporation, and the finish stops almost immediately.

Never heat the traditional stuff. Twelve years of aromatics vanish in about ten seconds over a flame, turning a fifty-euro bottle into ordinary sour caramel. Use it raw, at the end, on a dish already plated and warm, where the residual heat is enough to open it, in quantities measured by the drop.

The canonical uses are all correct: a few drops over shavings of long-aged Parmigiano Reggiano, a drizzle over plain butter risotto, a few drops on a rare steak straight off the pan. Beyond that, roasted onions, grilled asparagus, and the one that surprises people, vanilla ice cream, where milk fat carries the acidity into liquorice territory. The strawberry pairing is real, and works best when the fruit is ripe and sits with the vinegar for ten minutes first.

Everything you actually cook with should be IGP: vinaigrettes, marinades, deglazing onions, reducing with meat juices. A good three-year Invecchiato does all of it for a fraction of the money. Buying Traditional and boiling it is the most common expensive mistake in the category.

Balsamic vinegar keeps for years, and the traditional kind has already spent twelve to twenty five of them in wood. Store the bottle upright and closed, away from the stove and out of direct light; a dark cupboard at room temperature is right, and the fridge is not, because cold thickens it and mutes the aromatics. Never decant it into plastic or into an oil style pourer with an open spout. A sealed IGP bottle carries a best before date, which is the number to work from.

What changes after opening is slow. The bottle loses a little volume to evaporation, the liquid thickens and darkens, and the volatile aromatics fade first, so a bottle left half full for two years tastes flatter and more caramel heavy than the day it was opened. Sediment or crystals settling out of a traditional bottle is a normal consequence of a concentrated must; pour gently and it stays behind. A 100 millilitre bottle used by the drop lasts most households a year, and the producer is the right person to ask about a specific bottle.

Three things share the word balsamic on a shelf abroad, and the label separates them. Aceto Balsamico Tradizionale di Modena DOP, or the Reggio Emilia version, comes only in a sealed 100 millilitre bottle: bulb shaped and squat for Modena, an inverted tulip for Reggio. Its ingredient list has exactly one line, cooked grape must, and it pours thick enough to coat the back of a spoon and cling. Aceto Balsamico di Modena IGP comes in any bottle size, lists wine vinegar alongside concentrated must, often with caramel colour E150d, and runs freely.

The third thing is glaze or crema di balsamico, thickened with sugar and starch and outside both schemes; it is a sauce, not a vinegar. Price makes the split obvious and is the clearest signal: 100 millilitres of Tradizionale at twelve years runs roughly $60 to $110, twenty five years well above that, while IGP sits anywhere between $6 and $40 a bottle. Anything sold as aged twenty five years for fifteen dollars is IGP with a story. Reggio Emilia also colour codes its caps, lobster for twelve years, silver for eighteen, gold for twenty five.

In the US, Traditional DOP is stocked by Eataly, Gustiamo, Formaggio Kitchen and Zingerman's: expect 60 to 90 dollars for a twelve-year Affinato and 120 to 250 dollars for a twenty-five-year Extravecchio, both in 100 ml. In the UK, Italian delicatessens and specialists such as Vorrei and Natoora carry it at 55 to 80 pounds for the twelve-year and 110 to 200 for the twenty-five.

Check three things before paying: the bottle must be 100 ml in the official shape, the word Tradizionale must appear in the name, and the ingredients must read as cooked grape must alone. Anything labelled Balsamic Vinegar of Modena IGP in a 250 ml bottle at 40 dollars is a good cooking vinegar at a bad price.

For daily use, look for IGP marked Invecchiato: at least three years in barrel, and a much higher must percentage, at 20 to 45 dollars for 250 ml in the US, 18 to 40 pounds in the UK. Condimento from a Modena producer with cooked must as the only ingredient is often the smartest purchase of all at 30 to 70 dollars. Treat flavoured balsamics and glazes as sauces, not vinegars.

Modena is the obvious base. Dozens of family acetaie in the countryside around the city open for booked visits, usually on farms that also make Lambrusco and Parmigiano, and the standard tour ends with a side-by-side tasting of twelve-year and twenty-five-year, the fastest education available on what you are buying.

Spilamberto, twenty minutes south of Modena, has the Museo del Balsamico Tradizionale and hosts the Palio di San Giovanni every June, when family batteries compete before a panel of consortium tasters. Reggio Emilia keeps a municipal acetaia in its town hall, open to visitors, which explains the Reggio system of coloured capsules.

At the table, trattorie along the Via Emilia serve it the local way: on Parmigiano before the meal, on gnocco fritto and tigelle, on ice cream at the end. In Modena's better restaurants the bottle arrives with a dropper, which is the right amount of ceremony.