How Parmigiano Reggiano is Made

Pro tips

• Authentic Parmigiano Reggiano wheels can weigh 40-90 pounds and take two years to fully mature; proper humidity and temperature control in the aging facility are critical
• The distinctive crystalline texture develops during aging as calcium lactate crystals form; this is a sign of proper fermentation and quality
• Copper vats must reach precise temperatures during curdling to properly separate curds from whey; temperature variations affect the final cheese's texture and flavor

Equipment

copper vats · thermometer · cheese aging facility or cave

How long does Parmigiano Reggiano age?

Authentic Parmigiano Reggiano is aged for a minimum of 24 months, though premium versions may age 36 months or longer in dedicated aging facilities.

What are the only ingredients in Parmigiano Reggiano?

Only three ingredients: milk, salt, and rennet. No additives or preservatives are used in the traditional production process.

Why are copper vats used in cheesemaking?

Copper vats conduct heat evenly and efficiently during the curdling process, ensuring consistent temperature control critical for proper curd development.

Can you make Parmigiano Reggiano at home?

While the basic process can be replicated at home, authentic Parmigiano Reggiano must be produced in specific Italian regions (Parma, Reggio Emilia, Modena, Bologna, Mantua) to earn the Protected Designation of Origin (PDO) certification.

What is the difference between Parmigiano Reggiano and Parmesan?

Parmigiano Reggiano is made only in specific Italian regions with strict regulations, while Parmesan is a generic name that can refer to similar cheeses made anywhere without the same standards.