Understanding the Craft of Real Parmesan

There is parmesan, and there is Parmigiano Reggiano, and the difference between them is the difference between a name and the real thing. The powdery stuff in tubs, and much of what is loosely labelled parmesan, bears only a passing relation to the genuine article, a cheese made to exacting rules in a small corner of northern Italy and aged for years into something extraordinary. Once you understand what real parmesan is, and how to recognise it, the imitations lose their appeal for good.

A cheese bound by law

Parmigiano Reggiano is a protected name, which means it can be made only in a defined area of Emilia-Romagna, only from the milk of that region’s cows, and only by a method laid down and inspected in detail. This is not marketing; it is a legal guarantee, the same idea that governs a fine wine’s appellation. The cheese called simply parmesan carries no such protection, which is why it can be almost anything. France guards its own great cheeses in much the same way, as our piece on the craft of real Roquefort explains. The same principle protects many of Europe’s great mountain cheeses, among them the washed-rind cheese explored in our piece on the craft of real Reblochon.

The genuine article is made with remarkable simplicity: raw milk, a natural whey starter, and calf rennet, with nothing else added, not even much salt beyond a long brine bath. That purity is the point. It belongs to the same tradition of naturally worked, additive-free food that runs through everything from the patient craft of koji to a real sourdough.

How it is made

Each morning the evening’s partly skimmed milk is combined with fresh whole milk in vast copper vats. It is warmed, set with rennet, and the curd cut fine and cooked, then gathered, cut in two and moulded into the great wheels that will each weigh many kilograms. The wheels are brined for weeks, then set on wooden shelves to age.

Ageing is where the magic happens, and where time does the work. A wheel matures for a minimum period measured in years, and the best are held far longer. Over those months the cheese loses moisture and concentrates, its texture turning hard and granular, its flavour deepening from mild and milky to complex, savoury and faintly sweet, shot through with those little crunchy crystals of amino acid that are the mark of long ageing.

Those tiny crunchy crystals are not a flaw but a signature. They are crystallised amino acids, the taste of time itself, and no young or fake cheese has them.

Reading the rind

The genuine article tells you what it is. The whole rind is stencilled, in a repeating pin-dot script, with the name of the cheese, so that even a small wedge carries the proof of its origin on its edge. Look for that dotted lettering; its absence is a warning. A good cheesemonger will happily show you the rind of the wheel a wedge was cut from.

The rind itself, incidentally, is treasure, not rubbish. Do not throw it away. Dropped into a simmering soup or a pot of beans it dissolves slowly, lending a deep savoury richness that no other ingredient quite matches, in the same spirit that a good stock is built from the parts others discard.

How to taste and use it

Taste it on its own before you cook with it. Break, rather than slice, a piece from a fresh wedge, and let it sit on the tongue. You should find sweetness, saltiness, a savoury depth, sometimes notes of dried fruit or broth, and always that granular crunch. A drizzle of good aged balsamic and a piece of parmesan is a complete little course in itself, worthy of a place on any serious cheese board.

In cooking, grate it fresh, never bought ready-grated, which stales and loses its perfume within hours. It finishes pasta, enriches risotto, seasons a soup, gilds roasted vegetables. Because it is so intensely savoury, a little goes a long way, which makes the expense of the real thing far less than it first appears.

Buying and keeping it

Buy a wedge cut fresh from a whole wheel rather than pre-portioned plastic, and buy from someone who can tell you how long it was aged; the longer maturations are more complex and more expensive, and worth trying at least once to understand the range. Wrap it in waxed paper or a loosely sealed cloth rather than airtight plastic, which suffocates it, and keep it in the fridge, where a good wedge holds for weeks.

The question of age, and what it costs

One of the most useful things to understand about parmesan is that age is not simply better or worse but different, and the differences are worth tasting for yourself. A younger wheel, at the minimum maturation, is milder, softer and milkier, with a gentle nuttiness and only the beginnings of those crunchy crystals. It is lovely grated over pasta and kind to the wallet. A wheel held far longer becomes darker, drier and more crumbly, its flavour concentrated into something intense and savoury, streaked with notes of dried fruit and broth, and studded thickly with crystals. This is the cheese to eat in shards, on its own, as the thing itself rather than a seasoning.

Price climbs with age, because every extra month is another month of a large, valuable wheel sitting on a shelf, losing weight to evaporation and tying up the maker’s money. That is why the oldest maturations command a real premium, and why it is worth buying a small piece of a long-aged wheel occasionally rather than defaulting always to the youngest. Tasting a young and an old piece side by side is the quickest way to understand what age actually does, and to decide which you prefer for which purpose.

For everyday cooking, a mid-aged wedge is the sensible workhorse, complex enough to taste of something but not so precious that you hesitate to grate it. Keep that for the pan, and a small piece of something older for the board, and you have covered both ends of what this remarkable cheese can be.

Real parmesan is a small masterclass in what patience and protected craft can make of humble milk. Learn to recognise it, taste it properly, and use every scrap including the rind, and you will never go back to the tub. For more on the ingredients that reward this kind of attention, the wider Dining & Drinks section makes the same case again and again, that quality is rarely an accident and almost always worth the small premium it asks.