Cheese can only be called Parmigiano Reggiano if it was made in one of five Italian provinces: Parma, Reggio Emilia, Bologna, Mantua, or Modena.

Parmigiano Reggiano vs. Parmesan: Two names, two worlds—discover the key differences between the 'King of Cheeses' and its mass-market counterpart." When you grab a wedge of Parmesan at the ...

The Costco cheese works out to 78 cents per ounce. Regular 7-ounce wedges of Parmigiano-Reggiano at the supermarket can cost around $1.30 per ounce or more.

Customers who are looking for a really “grate” deal on cheese can head to the bulk shopping chain’s website for a 72-pound wheel of imported Parmigiano-Reggiano cheese.