Balsamic vinegar is traditional to the province of Modena where it was made already hundreds of years ago, a region just North of the Apennine Mountain ridge at the beginning of the Pianura Padana -
a very flat and fertile area famous for anything but wine (rice fields, cows for cheese, pigs for ham, etc).
GRAPES
7 kinds of grapes are allowed in the production of the balsamic, the most noteworthy being white Trebbiano and red Lambrusco (above). The grapes don't have to come from the region, but any good producer with self respect will make sure that they do.
BALSAMIC IS A PROCESS
Balsamic vinegar differs from wine vinegar as it doesn't undergo an alcoholic fermentation. The vinegar is made directly from the grape juice which is heated to allow an initial concentration (picture below "mosto cotto" grape juice before aging process).
Thanks to the addition of a "ceppo" (mother) the acidification occurs and ensures a sweeter sensation at the end. The aging takes place in small wooden barrels made out of different sorts of sweet woods (oak, cherry, walnut, etc) where no air-conditioning nor heating is allowed - traditionally under the roof tops of the houses in Modena.
This allows the bacteria to thrive in the summer when it's hot and an evaporation occurs, and in the winter the vinegar has time to rest and deposit. Year after year this process is allowed to take place, but because the product always looses in volume, the barrels used need to become smaller and smaller. It can easily take a decade to obtain a decent balsamic vinegar with the proper density and complexity, hence there will be barrels of many different sizes in an "Acetaia" in Modena - these series of barrels from bigger to smaller are called "batterie" and are often dedicated to a person in the family.
To be classified "Tradizionale" or "Tradizionale Extra Vecchio" (always bottled in the same 100 ml and packaged in brown boxes as you can see on picture above) is a DOP regulation and requires a min of 12 yrs or 25 yrs of aging in the barrels (if you want to read more:
http://www.balsamico.it/). We balsamic vinegar snobs consider this stuff to the be the "real" balsamic vinegar - but problematic is the cost of these bottles, often starting at around 50 euros a bottle.
THE PARADOX
So balsamic vinegar takes years to make and once it reaches the shelves of very special stores the cost is exuberant. In fact, most people have never tasted "real" balsamic.
A commercial product was created to simulate the original one but beware, this sort of balsamic vinegar doesn't refer to a PROCESS, it is made up from wine vinegar with addition of coloring, caramel, arabic gum and corn starch - so it is a pure IMITATION. This product could take a few days in making and sell cheaply and is exported around the world as Balsamic Vinegar of Modena, even though it really FAKE.
So what to do if you want to get your hands on the real stuff but don't want to break the bank? Luckily a lot of balsamic vinegar producers have understood the problematic for the end consumer and hence produce something that's labelled as "condimento" or "aceto balsamico di modena IGP" (if the bottle is at least 250ml) and to cut costs this stuff can be one of these 4 things:
1) made by the producers of the "Tradizionale" and in the same way, but not under the supervision and approval of the DOP Consortium which is costly.
2) made by the producers of the "Tradizionale, but not aged as long so could not be approved by the Consortium.
3) made the same way as the "Tradizionale", but outside the region recognized for DOP (Modena & Reggio Emilia)
4) made by a mixture of cheap FAKE balsamic vinegar of blended with some concentrated grape must in various proportions.
MAMMA MIA!
It just isn't easy to be a consumer nowadays because how the hell are you supposed to know all of these things - and still when you know it, it isn't the easiest of things to navigate the label! It's almost hopeless, however, don't give up because once you taste the real stuff you'll be in heaven.
We have sourced the most fantastic balsamic vinegar made from a producer just outside Modena who also produces the Tradizionale (all the pictures are from the farm of our producer). We sell it in our shop in Siena and can ship it, too (
http://www.tuscany-in-a-bottle.com/order.htm). It is the stuff that goes under point no 1) and it is beautifully rich, and is of course perfect on salads, but this balsamic is totally amazing on pasta as well, or try it on parmesan cheese shavings, steak, or why not on fresh fruit as strawberries and peaches or even on vanilla ice cream (wow!). So just like great olive oil, you don't cook with great balsamic. It just sits on the table at all times and you add it at your pleasure to anything you like!